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Wellcome to green olympiad test 2026

2026-10-08T15:45:38.117+05:30

How to Produce human baby 👶 in funy way

2025-11-04T15:59:00.006+05:30

Practical list of class 11th Biology

2025-09-23T13:15:00.006+05:30

A: List of Experiments

1. Study and describe locally available common flowering plants, from family Solanaceae (Rosaceae, Asteraceae or Brassicaceae can be substituted in case of particular geographical location) including dissection and display of floral whorls, anther and ovary to show number of chambers (floral formulae and floral diagrams), type of root (tap and adventitious); type of stem (herbaceous and woody); leaf (arrangement, shape, venation, simple and compound).

2. Preparation and study of T.S. of dicot and monocot roots and stems (primary).

3. Study of osmosis by potato osmometer.

4. Study of plasmolysis in epidermal peels (e.g. Rhoeoflily leaves or flashy scale leaves of onion bulb).

5.Study of distribution of stomata on the upper and lower surfaces of leaves.

6. Comparative study of the rates of transpiration in the upper and lower surfaces of

leaves.

7. Test for the presence of sugar, starch, proteins and fats in suitable plant and

animal materials.

8. Separation of plant pigments through paper chromatography.

9. Study of the rate of respiration in flower buds/leaf tissue and germinating seeds.

10. test for presence or urea in urine.

11. Test for presence of sugar in urine. 12. Test for presence of albumin in urine.

13. Test for presence of bile salts in urine.

B. Study and Observe the following (spotting):

1. Parts of a compound microscope.

2. Specimens/slides/models and identification with reasons - Bacteria, Oscillatoria, Spirogyra, Rhizopus, mushroom, yeast, liverwort, moss, fern, pine, one monocotyledonous plant, one dicotyledonous plant and one lichen.

3. Virtual specimens/slides/models and identifying features of - Amoeba, Hydra, liver fluke, Ascaris, leech, earthworm, prawn, silkworm, honey bee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.

4. Mitosis in onion root tip cells and animal's cells (grasshopper) from permanent slides. 5. Types of inflorescence (cymose and racemose).

Heredity – 50 Hard MCQs

2025-09-13T10:28:00.001+05:30

Heredity – 50 Hard MCQs

Mendel’s Experiments & Laws

1. Mendel is known as the father of genetics because:

(a) He discovered DNA

(b) He proposed laws of inheritance

(d) He invented microscope

2. Mendel performed his experiments on:

(a) Maize

(b) Wheat

(d) Rice

3. Which feature made pea plant suitable for Mendel’s experiments?

(a) Short life cycle

(b) Large number of seeds

(d) All of these

4. The law of segregation is also known as:

(a) Law of purity of gametes

(b) Law of dominance

(d) Blending theory

5. Law of independent assortment is applicable when:

(a) One gene is involved

(b) Two or more genes are involved

(d) There is incomplete dominance

6. In monohybrid cross, the F2 phenotypic ratio is:

(a) 1:2:1

(b) 9:3:3:1

(d) 2:1

7. In dihybrid cross, the F2 phenotypic ratio is:

(a) 3:1

(b) 9:3:3:1

(d) 1:1

8. Mendel’s law of dominance explains:

(a) Recessive traits disappear in F1

(b) Dominant trait masks recessive trait

(d) Traits skip generations

9. Which of the following is a monohybrid cross?

(a) Tt × Tt

(b) TtRr × TtRr

(d) AaBb × aabb

10. Which character pair was NOT studied by Mendel?

(a) Tall/short stem

(b) Round/wrinkled seed

(d) Green/yellow seed

---

Genes, Chromosomes, DNA

11. Genes are located on:

(a) Nucleus

(b) Chromosomes

(d) RNA

12. The physical expression of a gene is called:

(a) Genotype

(b) Phenotype

(d) Trait

13. Alternate forms of a gene are called:

(a) Traits

(b) Characters

(d) Genotype

14. Which molecule carries hereditary information?

(a) RNA

(b) DNA

(d) Lipid

15. The number of pairs of chromosomes in humans is:

(a) 22

(b) 23

(d) 44

16. A human gamete contains how many chromosomes?

(a) 22

(b) 23

(d) 46

17. The process of formation of gametes is:

(a) Mitosis

(b) Meiosis

(d) Budding

18. DNA fingerprinting is based on:

(a) Unique DNA sequence

(b) RNA code

(d) Enzyme activity

19. The functional unit of heredity is:

(a) Chromosome

(b) Gene

(d) Protein

20. Which one determines sex of child?

(a) Egg

(b) Sperm

(d) Cytoplasm

---

Variation & Evolution

21. Variation is important because it:

(a) Leads to mutation

(b) Provides adaptability

(d) Reduces diversity

22. A sudden heritable change in DNA is called:

(a) Recombination

(b) Mutation

(d) Variation

23. The ultimate source of variation is:

(a) Mutation

(b) Fertilization

(d) DNA copying

24. Evolution occurs due to:

(a) Mutation

(b) Natural selection

(d) All of these

25. Who gave the theory of natural selection?

(a) Lamarck

(b) Mendel

(d) Morgan

26. Vestigial organs are:

(a) Fully functional organs

(b) Non-functional organs

(d) None

27. Example of homologous organs is:

(a) Wings of bird and bat

(b) Wings of insect and bird

(d) Eye of octopus and man

28. Example of analogous organs is:

(a) Forelimb of human and horse

(b) Wings of bat and wings of bird

(d) Heart of man and rabbit

29. Fossils provide:

(a) Evidence of past life

(b) Proof of evolution

(d) All of these

30. Which technique helps in determining age of fossils?

(a) Carbon dating

(b) Fossilization

(d) DNA test

---

Sex Determination

31. Sex of human baby depends on contribution of:

(a) X chromosome from mother

(b) Y chromosome from father

(d) Both X and Y from mother

32. Female child inherits which chromosome combination?

(a) XX

(b) XY

(d) XO

33. Male child inherits:

(a) XX

(b) XY

(d) XO

34. Who determines sex of child?

(a) Mother only

(b) Father only

(d) Environment

35. Probability of child being male or female is:

(a) 25%

(b) 50%

(d) 100%

---

Applied Genetics

36. Hybridisation results in:

(a) Pure line

(b) More variation

(d) No variation

37. The cross between tall pea plant (TT) and dwarf pea plant (tt) produces:

(a) All tall

(b) All dwarf

(d) 3 tall 1 dwarf

38. Incomplete dominance was first studied in:

(a) Pea plant

(b) Maize

(d) Rice

39. Haemophilia is a:

(a) Dominant trait

(b) Recessive trait

(d) Both b and c

40. Colour blindness is caused due to:

(a) Autosomal mutation

(b) Sex-linked mutation

(d) Recessive gene on Y

41. In sickle-cell anaemia, the defect lies in:

(a) DNA

(b) RNA

(d) Chromosome number

42. Which of the following is NOT inherited?

(a) Eye colour

(b) Blood group

(d) Speaking English

43. Blood group in humans is determined by:

(a) Chromosome 21

(b) Chromosome 9

(d) Chromosome Y

44. Which of the following shows multiple alleles?

(a) Haemophilia

(b) Blood group

(d) Colour blindness

45. In F2 generation of monohybrid cross, the genotypic ratio is:

(a) 1:2:1

(b) 9:3:3:1

(d) 1:1

---

Miscellaneous

46. Who coined the term “gene”?

(a) Mendel

(b) Johannsen

(d) Watson

47. Chromosome theory of inheritance was proposed by:

(a) Mendel

(b) Morgan and Sutton

(d) Lamarck

48. Which organelle is called “powerhouse of cell” and has its own DNA?

(a) Nucleus

(b) Ribosome

(d) Lysosome

49. Which inheritance is influenced by environment?

(a) Genetic

(b) Acquired characters

(d) Hybridisation

50. The human genome project was completed in:

(a) 1995

(b) 2001

(d) 2010

---

✅ Answer Key

1-b, 2-c, 3-d, 4-a, 5-b

6-c, 7-b, 8-b, 9-a, 10-c

11-b, 12-b, 13-c, 14-b, 15-b

16-b, 17-b, 18-a, 19-b, 20-b

21-b, 22-b, 23-a, 24-d, 25-c

26-b, 27-a, 28-b, 29-d, 30-a

31-b, 32-a, 33-b, 34-b, 35-b

36-b, 37-a, 38-c, 39-c, 40-b

41-c, 42-d, 43-b, 44-b, 45-a

46-b, 47-b, 48-c, 49-b, 50-c

How Do Organisms Reproduce? – 50 Hard MCQs

2025-09-13T10:22:00.001+05:30

How Do Organisms Reproduce? – 50 Hard MCQs

Asexual Reproduction

1. Reproduction in Amoeba occurs by:

(a) Binary fission

(b) Multiple fission

(d) Fragmentation

2. In Plasmodium, reproduction occurs by:

(a) Binary fission

(b) Multiple fission

(d) Sporulation

3. Which of the following reproduces by budding?

(a) Yeast

(b) Hydra

(d) Paramecium

4. Which is an example of vegetative propagation by leaf?

(a) Potato

(b) Bryophyllum

(d) Onion

5. Runners, tubers and bulbs are examples of:

(a) Sexual reproduction

(b) Asexual reproduction

(d) None

6. Spores are produced in:

(a) Yeast

(b) Rhizopus

(d) Planaria

7. Which is NOT a natural method of vegetative propagation?

(a) Rhizome

(b) Cutting

(d) Sucker

8. Which part of potato is involved in reproduction?

(a) Root

(b) Stem

(d) Flower

9. Grafting is a method of:

(a) Sexual reproduction

(b) Artificial vegetative propagation

(d) Cross fertilisation

10. Which advantage does vegetative propagation provide?

(a) Large genetic variation

(b) New varieties can be developed

(d) None

---

Sexual Reproduction in Plants

11. Which structure in flower produces pollen grains?

(a) Anther

(b) Stigma

(d) Style

12. Which structure of flower traps pollen grain?

(a) Anther

(b) Stigma

(d) Sepal

13. Transfer of pollen from anther to stigma is:

(a) Fertilisation

(b) Pollination

(d) Germination

14. Fusion of male and female gametes is:

(a) Fertilisation

(b) Pollination

(d) Germination

15. In angiosperms, double fertilisation involves:

(a) Two eggs + one sperm

(b) Two sperms + two cells of embryo sac

(d) Fusion of pollen grains

16. Embryo sac of an angiosperm has:

(a) One nucleus

(b) Two nuclei

(d) Four nuclei

17. Which part of flower develops into fruit?

(a) Ovule

(b) Ovary

(d) Sepal

18. Seed is formed from:

(a) Ovary

(b) Ovule

(d) Stigma

19. Which part provides nutrition to the embryo in seed?

(a) Endosperm

(b) Cotyledon

(d) Radicle

20. Which condition favours self-pollination?

(a) Flowers on different plants

(b) Flowers with only stamens

(d) Cross-breeding

---

Sexual Reproduction in Humans

21. Testes are located outside abdominal cavity because:

(a) To increase testosterone production

(b) Sperms need lower temperature

(d) To avoid infection

22. Which cells in testes produce testosterone?

(a) Leydig cells

(b) Sertoli cells

(d) Epithelial cells

23. Which structure in male provides nourishment to sperms?

(a) Vas deferens

(b) Prostate gland

(d) Epididymis

24. Which structure in female produces eggs?

(a) Oviduct

(b) Ovary

(d) Cervix

25. Fertilisation in humans occurs in:

(a) Ovary

(b) Fallopian tube

(d) Vagina

26. Implantation of embryo occurs in:

(a) Ovary

(b) Fallopian tube

(d) Cervix

27. Placenta is formed by:

(a) Embryo only

(b) Uterine wall only

(d) Umbilical cord

28. Which hormone maintains pregnancy?

(a) Progesterone

(b) Oestrogen

(d) FSH

29. Menstrual cycle is regulated by:

(a) Pituitary and thyroid

(b) Pituitary and ovary

(d) Thyroid and pancreas

30. Which day of menstrual cycle usually involves ovulation?

(a) 1st day

(b) 7th day

(d) 28th day

---

Reproductive Health

31. Oral contraceptive pills mainly work by:

(a) Killing sperms

(b) Blocking oviduct

(d) Preventing implantation only

32. Surgical method of birth control in males is:

(a) Vasectomy

(b) Tubectomy

(d) Condom

33. Surgical method of birth control in females is:

(a) Vasectomy

(b) Tubectomy

(d) Diaphragm

34. STD caused by virus is:

(a) Gonorrhoea

(b) Syphilis

(d) Both (a) and (b)

35. Which is not a method of contraception?

(a) IUCD

(b) Condoms

(d) Pills

36. Condoms prevent pregnancy by:

(a) Blocking release of ovum

(b) Killing sperms

(d) Preventing fertilisation in ovary

37. Which of the following prevents implantation of zygote?

(a) IUCD (Copper-T)

(b) Condom

(d) Tubectomy

38. Which is a temporary method of birth control?

(a) Tubectomy

(b) Condom

(d) All of these

39. Which STD is caused by bacteria?

(a) AIDS

(b) Gonorrhoea

(d) Herpes

40. Which statement about contraception is INCORRECT?

(a) Condom prevents STDs

(b) Vasectomy is reversible easily

(d) IUCD prevents implantation

---

Genetics & Variations

41. The main advantage of sexual reproduction is:

(a) Rapid increase of population

(b) Production of variation

(d) Uniform offspring

42. Which process ensures genetic variation in offspring?

(a) Mitosis

(b) Meiosis

(d) Budding

43. Which type of reproduction favours evolution?

(a) Sexual

(b) Asexual

(d) None

44. Vegetative propagation is used in agriculture mainly for:

(a) More variation

(b) Uniform quality and faster yield

(d) Increasing genetic recombination

45. Offspring produced by asexual reproduction are genetically:

(a) Different

(b) Identical

(d) None

46. In human males, which pair of chromosomes is present?

(a) XX

(b) XY

(d) XO

47. Sex of a child is determined by:

(a) Mother’s gamete

(b) Father’s gamete

(d) Environment

48. Which chromosome is responsible for male character in humans?

(a) X

(b) Y

(d) None

49. Which statement is correct?

(a) Father always gives X chromosome to child

(b) Mother always gives Y chromosome to child

(d) Father always gives two X chromosomes

50. Variation is more in:

(a) Asexual reproduction

(b) Sexual reproduction

(d) Vegetative propagation

---

✅ Answer Key

1-a, 2-b, 3-c, 4-b, 5-b

6-b, 7-b, 8-b, 9-b, 10-c

11-a, 12-b, 13-b, 14-a, 15-b

16-c, 17-b, 18-b, 19-a, 20-c

21-b, 22-a, 23-c, 24-b, 25-b

26-c, 27-c, 28-a, 29-b, 30-c

31-c, 32-a, 33-b, 34-c, 35-c

36-c, 37-a, 38-b, 39-b, 40-b

41-b, 42-b, 43-a, 44-b, 45-b

46-b, 47-b, 48-b, 49-c, 50-b

---

Control and Coordination – 50 Hard MCQs

2025-09-13T10:18:00.003+05:30

Control and Coordination – 50 Hard MCQs

Nervous System

1. The structural and functional unit of nervous system is:

(a) Axon

(b) Nephron

(d) Dendrite

2. The gap between two neurons is called:

(a) Axon

(b) Dendrite

(d) Node

3. Transmission of impulse across synapse occurs through:

(a) Electrical signals only

(b) Neurotransmitters

(d) Movement of ions only

4. The part of brain responsible for voluntary actions is:

(a) Cerebellum

(b) Cerebrum

(d) Hypothalamus

5. Which part of brain controls balance and posture?

(a) Cerebrum

(b) Cerebellum

(d) Medulla

6. Reflex actions are controlled by:

(a) Brain

(b) Spinal cord

(d) Medulla

7. Which of the following is a reflex action?

(a) Reading a book

(b) Salivation at sight of food

(d) Solving math

8. The protective covering around axon is:

(a) Myelin sheath

(b) Synapse

(d) Cerebrospinal fluid

9. The junction of two neurons is rich in:

(a) Insulin

(b) Neurotransmitters

(d) Hormones

10. Which nerve carries impulses from eye to brain?

(a) Auditory nerve

(b) Olfactory nerve

(d) Sensory nerve

---

Plant Hormones and Movements

11. Which hormone promotes cell elongation in plants?

(a) Gibberellin

(b) Auxin

(d) Abscisic acid

12. Which plant hormone promotes fruit ripening?

(a) Auxin

(b) Ethylene

(d) Cytokinin

13. Which plant hormone promotes seed germination?

(a) Auxin

(b) Gibberellin

(d) ABA

14. Which hormone inhibits growth in plants?

(a) Auxin

(b) Cytokinin

(d) Abscisic acid

15. Phototropism is caused due to:

(a) Uniform distribution of auxin

(b) Uneven distribution of auxin

(d) ABA

16. Roots grow downwards due to:

(a) Hydrotropism

(b) Geotropism

(d) Thigmotropism

17. Tendrils coil around support due to:

(a) Hydrotropism

(b) Thigmotropism

(d) Chemotropism

18. Growth of pollen tube towards ovule is an example of:

(a) Phototropism

(b) Geotropism

(d) Thigmotropism

19. Opening and closing of stomata is controlled by:

(a) Auxin

(b) ABA

(d) Gibberellin

20. Sleep movement of leaves in Mimosa pudica is due to:

(a) Tropic movement

(b) Nastic movement

(d) Thigmotropism

---

Endocrine System

21. The master gland in humans is:

(a) Thyroid

(b) Pituitary

(d) Pancreas

22. Which hormone regulates metabolism?

(a) Insulin

(b) Thyroxine

(d) Auxin

23. Which hormone controls sugar level in blood?

(a) Thyroxine

(b) Adrenaline

(d) Pituitary hormone

24. Which hormone is called emergency hormone?

(a) Insulin

(b) Thyroxine

(d) Auxin

25. Which gland is situated above kidneys?

(a) Pituitary

(b) Adrenal

(d) Pancreas

26. Goitre is caused by deficiency of:

(a) Calcium

(b) Iron

(d) Potassium

27. Diabetes is caused by deficiency of:

(a) Thyroxine

(b) Adrenaline

(d) Growth hormone

28. Which endocrine gland is both exocrine and endocrine?

(a) Liver

(b) Pancreas

(d) Kidney

29. Which hormone controls growth in children?

(a) Thyroxine

(b) Growth hormone

(d) Adrenaline

30. Which gland is called “emotional gland”?

(a) Adrenal

(b) Thyroid

(d) Pancreas

---

Integrated Control

31. Reflex arc differs from normal nerve pathway because it:

(a) Involves brain directly

(b) Involves spinal cord only

(d) Involves medulla

32. Which is NOT a voluntary action?

(a) Writing

(b) Blinking

(d) Speaking

33. Which part of brain regulates hunger and thirst?

(a) Cerebrum

(b) Medulla

(d) Cerebellum

34. Coordination in plants is achieved by:

(a) Hormones only

(b) Nervous system

(d) None

35. Tropic movements are always:

(a) Random

(b) Directional

(d) Neutral

36. Which plant hormone delays ageing of leaves?

(a) Auxin

(b) Gibberellin

(d) ABA

37. Which part of brain controls involuntary actions like heartbeat?

(a) Cerebrum

(b) Medulla

(d) Hypothalamus

38. Which part of brain is largest in humans?

(a) Cerebrum

(b) Cerebellum

(d) Pons

39. Which part of human brain controls body temperature?

(a) Pituitary

(b) Cerebrum

(d) Cerebellum

40. Nervous control in humans is faster than hormonal because:

(a) Hormones are unstable

(b) Impulses travel as electrical signals

(d) Both (b) and (c)

---

Miscellaneous

41. The message from receptor to CNS is carried by:

(a) Motor neuron

(b) Sensory neuron

(d) None

42. The message from CNS to effector is carried by:

(a) Sensory neuron

(b) Motor neuron

(d) Synapse

43. Involuntary actions are controlled by:

(a) Cerebrum

(b) Medulla

(d) Spinal cord

44. The peripheral nervous system consists of:

(a) Brain + Spinal cord

(b) Brain + Nerves

(d) Nerves outside CNS

45. Which hormone is secreted in stress situations?

(a) Thyroxine

(b) Adrenaline

(d) Auxin

46. Movement of sunflower towards sunlight is:

(a) Phototropism

(b) Nastic

(d) Geotropism

47. Which plant hormone is used for artificial ripening of fruits?

(a) Ethylene

(b) Auxin

(d) ABA

48. Reflex arc in humans usually bypasses:

(a) Spinal cord

(b) Brain

(d) Sensory neuron

49. Which endocrine gland controls sexual characters?

(a) Adrenal

(b) Gonads

(d) Pituitary

50. Which hormone regulates water balance in body?

(a) ADH (Vasopressin)

(b) Insulin

(d) Auxin

---

✅ Answer Key

1-c, 2-c, 3-b, 4-b, 5-b

6-b, 7-b, 8-a, 9-b, 10-c

11-b, 12-b, 13-b, 14-d, 15-b

16-b, 17-b, 18-c, 19-b, 20-b

21-b, 22-b, 23-c, 24-c, 25-b

26-c, 27-c, 28-b, 29-b, 30-a

31-b, 32-b, 33-c, 34-a, 35-b

36-c, 37-b, 38-a, 39-c, 40-d

41-b, 42-b, 43-b, 44-d, 45-b

46-a, 47-a, 48-b, 49-b, 50-a

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Life Processes – 50 Hard MCQs

2025-09-13T10:02:00.001+05:30

Life Processes – 50 Hard MCQs

Nutrition

1. Which of the following is NOT a product of photosynthesis?

(a) Oxygen

(b) ATP

(d) Lactic acid

2. The enzyme ptyalin acts on:

(a) Proteins

(b) Fats

(d) Cellulose

3. Which part of the alimentary canal receives bile juice?

(a) Stomach

(b) Duodenum

(d) Ileum

4. Which structure prevents food from entering the windpipe?

(a) Glottis

(b) Epiglottis

(d) Larynx

5. In human digestion, maximum absorption of digested food occurs in:

(a) Stomach

(b) Duodenum

(d) Large intestine

---

Respiration

6. In anaerobic respiration of yeast, end products are:

(a) Ethanol + CO₂ + ATP

(b) Lactic acid + ATP

(d) Water + ATP

7. In mitochondria, energy is released by:

(a) Glycolysis

(b) Electron transport chain

(d) Both (b) and (c)

8. The number of ATP molecules produced in complete oxidation of one glucose molecule is:

(a) 2

(b) 18

(d) 38

9. Which part of human respiratory system has ciliated epithelium to filter air?

(a) Nasal cavity

(b) Trachea

(d) Diaphragm

10. The ultimate hydrogen acceptor in aerobic respiration is:

(a) NAD⁺

(b) FAD

(d) Carbon dioxide

---

Transportation

11. Which blood vessel carries oxygenated blood from lungs to heart?

(a) Pulmonary artery

(b) Pulmonary vein

(d) Vena cava

12. Which chamber of human heart pumps blood to whole body?

(a) Right atrium

(b) Right ventricle

(d) Left ventricle

13. Which type of circulation is found in humans?

(a) Open

(b) Single

(d) Incomplete

14. The clotting of blood requires:

(a) Fibrinogen

(b) Thromboplastin

(d) All of these

15. Which one transports food in plants?

(a) Xylem vessels

(b) Xylem tracheids

(d) Guard cells

16. Which pressure is responsible for movement of water in xylem?

(a) Osmotic pressure

(b) Root pressure

(d) Blood pressure

17. Lymph is different from blood because it lacks:

(a) Plasma

(b) RBCs

(d) Antibodies

18. In plants, upward movement of water mainly depends on:

(a) Root pressure

(b) Transpiration pull

(d) Imbibition

19. Which of the following carries deoxygenated blood?

(a) Aorta

(b) Pulmonary vein

(d) Coronary artery

20. Which organ produces heparin (anticoagulant)?

(a) Heart

(b) Liver

(d) Kidney

---

Excretion

21. Functional unit of kidney is:

(a) Nephron

(b) Alveolus

(d) Ureter

22. Urea is formed in:

(a) Kidney

(b) Liver

(d) Small intestine

23. Which part of nephron collects filtrate from Bowman’s capsule?

(a) Collecting duct

(b) Proximal convoluted tubule

(d) Distal convoluted tubule

24. In which form is nitrogen excreted in humans?

(a) Ammonia

(b) Uric acid

(d) Amino acids

25. Artificial kidney works on the principle of:

(a) Active transport

(b) Ultrafiltration and diffusion

(d) Osmosis only

26. In human excretory system, urine is carried from kidneys to bladder by:

(a) Urethra

(b) Ureter

(d) Nephron

27. Excess salts are removed from plants by:

(a) Transpiration

(b) Diffusion

(d) Lenticels

28. Which process in nephron is responsible for glucose reabsorption?

(a) Filtration

(b) Diffusion

(d) Active secretion

29. In desert plants, the main waste product is:

(a) Ammonia

(b) Urea

(d) CO₂

30. Which organ in plants stores excretory products as crystals?

(a) Vacuole

(b) Chloroplast

(d) Cell wall

---

Mixed Concepts

31. Haemoglobin has affinity for:

(a) Oxygen

(b) Nitrogen

(d) Carbon monoxide

32. Which gas forms a stable complex with haemoglobin?

(a) O₂

(b) CO₂

(d) H₂

33. Glucose is transported in plants as:

(a) Starch

(b) Maltose

(d) Fructose

34. Which of the following shows both endocrine and exocrine function?

(a) Liver

(b) Kidney

(d) Stomach

35. The wall of alveoli is:

(a) Thick and permeable

(b) Thin and permeable

(d) Thin and impermeable

36. In dialysis, the fluid used is:

(a) Plasma

(b) Dialysing solution similar to plasma

(d) Saline water

37. Blood is filtered in kidney at:

(a) Bowman’s capsule

(b) Collecting duct

(d) Glomerulus

38. If guard cells swell, stomata:

(a) Close

(b) Open

(d) Remain unchanged

39. In mammals, maximum CO₂ is transported as:

(a) Carbamino-haemoglobin

(b) Dissolved in plasma

(d) Free CO₂

40. Which blood group is universal donor?

(a) A

(b) B

(d) O

41. Which blood group is universal recipient?

(a) A

(b) B

(d) O

42. Which enzyme digests protein in stomach?

(a) Trypsin

(b) Pepsin

(d) Ptyalin

43. Which pigment gives green colour to plants?

(a) Carotene

(b) Xanthophyll

(d) Anthocyanin

44. Plants lose excess water through:

(a) Photosynthesis

(b) Respiration

(d) Guttation

45. Which chamber of human heart receives oxygenated blood from lungs?

(a) Right atrium

(b) Right ventricle

(d) Left ventricle

46. The enzyme lipase acts on:

(a) Protein

(b) Fat

(d) Vitamin

47. In plants, phloem transports food by:

(a) Root pressure

(b) Transpiration pull

(d) Diffusion

48. Which part of alimentary canal absorbs water and minerals?

(a) Stomach

(b) Small intestine

(d) Duodenum

49. Which part of brain regulates thirst and excretion?

(a) Medulla

(b) Hypothalamus

(d) Pons

50. Which is the universal energy currency of the cell?

(a) Glucose

(b) Pyruvate

(d) NADH

---

✅ Answer Key

1-d, 2-c, 3-b, 4-b, 5-c

6-a, 7-d, 8-d, 9-b, 10-c

11-b, 12-d, 13-c, 14-d, 15-c

16-b, 17-b, 18-b, 19-c, 20-b

21-a, 22-b, 23-b, 24-c, 25-b

26-b, 27-c, 28-c, 29-c, 30-a

31-a, 32-c, 33-c, 34-c, 35-b

36-b, 37-d, 38-b, 39-c, 40-d

41-c, 42-b, 43-c, 44-c, 45-c

46-b, 47-c, 48-c, 49-b, 50-c

🌿 Biology अब बनेगी आसान! 🌿 📘 Class 9th–12th के लिए Notes, MCQs, Diagram-based Questions और Exam Tips, सब एक ही जगह – 👉 Pk25ng Educational Biology Contents

2025-09-11T22:58:00.005+05:30

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Class 9 Biology – Cell & Tissue (100 Hard MCQs)

2025-09-02T20:18:00.001+05:30

Class 9 Biology – Cell & Tissue (100 Hard MCQs)

Part A – Cell (Fundamental Unit of Life) (50 MCQs)

1. Who coined the term "cell"?
(a) Schleiden
(b) Schwann
(c) Robert Hooke
(d) Robert Brown

2. Which cell organelle is absent in prokaryotes?
(a) Ribosome
(b) Cell membrane
(c) Nucleus
(d) Cytoplasm

3. Which organelle is semi-autonomous and contains its own DNA and ribosomes?
(a) Lysosome
(b) Golgi body
(c) Mitochondria
(d) Endoplasmic reticulum

4. Which of the following is selectively permeable?
(a) Cell wall
(b) Plasma membrane
(c) Nuclear pore
(d) Tonoplast

5. In onion peel plasmolysis, the cell becomes:
(a) Flaccid
(b) Turgid
(c) Lysed
(d) Normal

6. Which scientist discovered the nucleus?
(a) Robert Brown
(b) Robert Hooke
(c) Virchow
(d) Schwann

7. Which organelle is called “suicidal bag”?
(a) Ribosome
(b) Lysosome
(c) Golgi apparatus
(d) Plastid

8. The double-membrane organelles are:
(a) Chloroplast, mitochondria, nucleus
(b) Golgi body, ribosome, lysosome
(c) Vacuole, centriole, ER
(d) None of these

9. Which is absent in an animal cell?
(a) Nucleus
(b) Mitochondria
(c) Chloroplast
(d) Ribosome

10. Cell wall in plants is made up of:
(a) Peptidoglycan
(b) Starch
(c) Cellulose
(d) Lignin

11. Which organelle modifies, sorts and packs proteins?
(a) ER
(b) Ribosome
(c) Golgi apparatus
(d) Mitochondria

12. Which organelle is directly connected with protein synthesis?
(a) Smooth ER
(b) Rough ER
(c) Lysosome
(d) Vacuole

13. 80S ribosomes are present in:
(a) Bacteria
(b) Mitochondria
(c) Plant cell cytoplasm
(d) Chloroplast

14. Fluid mosaic model of plasma membrane was given by:
(a) Singer & Nicolson
(b) Robert Hooke
(c) Virchow
(d) Watson & Crick

15. The universal solvent in cells is:
(a) Cytoplasm
(b) Water
(c) Nucleoplasm
(d) Protoplasm

16. The process of engulfing food by cell membrane is called:
(a) Pinocytosis
(b) Phagocytosis
(c) Exocytosis
(d) Endocytosis

17. Which part of the cell disappears during cell division?
(a) Chromosomes
(b) Nucleolus
(c) Centrioles
(d) ER

18. Which is the site of respiration?
(a) Golgi
(b) Nucleus
(c) Mitochondria
(d) Ribosome

19. The energy currency of the cell is:
(a) DNA
(b) ATP
(c) Glucose
(d) RNA

20. The genetic material in bacteria is:
(a) Chromatin
(b) Plasmid & nucleoid
(c) Chromosomes
(d) Nucleus

21. Chromosomes are made up of:
(a) Protein only
(b) DNA only
(c) DNA and protein
(d) RNA

22. Lysosomes are rich in:
(a) Lipase
(b) Protease
(c) Hydrolytic enzymes
(d) Oxidase

23. Which structure controls entry & exit of substances?
(a) Nucleus
(b) Cell wall
(c) Plasma membrane
(d) Golgi

24. Which plastid stores starch?
(a) Chloroplast
(b) Chromoplast
(c) Leucoplast
(d) None

25. Which organelle is called "kitchen of cell"?
(a) Mitochondria
(b) Ribosome
(c) Chloroplast
(d) Lysosome

26. Which structure connects the two layers of nuclear membrane?
(a) Chromosomes
(b) Pores
(c) Chromatin
(d) Ribosomes

27. Cell organelle involved in digestion of foreign material:
(a) Golgi
(b) Ribosome
(c) Lysosome
(d) Chloroplast

28. Which cell part maintains shape of cell?
(a) Nucleus
(b) Cell wall
(c) Mitochondria
(d) Ribosome

29. Which organelle forms spindle fibres?
(a) Lysosome
(b) Centriole
(c) Ribosome
(d) ER

30. Which is called "control center of cell"?
(a) Cytoplasm
(b) Nucleus
(c) Golgi
(d) Ribosome

31. Which plastid contains pigment carotenoid?
(a) Chloroplast
(b) Chromoplast
(c) Leucoplast
(d) None

32. Ribosomes are made up of:
(a) DNA & protein
(b) RNA & protein
(c) DNA only
(d) Protein only

33. The largest cell organelle in plants is:
(a) Vacuole
(b) Nucleus
(c) Chloroplast
(d) Golgi

34. Which cell organelle helps in packaging & secretion?
(a) ER
(b) Golgi body
(c) Lysosome
(d) Ribosome

35. The clear fluid inside nucleus is:
(a) Cytoplasm
(b) Nucleoplasm
(c) Vacuole
(d) Ribosome

36. Plant cell wall is rigid due to:
(a) Cellulose
(b) Starch
(c) Pectin
(d) Chitin

37. Which of these is not part of cell theory?
(a) Cell is basic unit of life
(b) All cells come from pre-existing cells
(c) All organisms are made up of cells
(d) Cells arise spontaneously

38. Which organelle is absent in mature RBCs?
(a) Nucleus
(b) Cytoplasm
(c) Plasma membrane
(d) None

39. Which organelle is responsible for detoxification?
(a) Lysosome
(b) Smooth ER
(c) Mitochondria
(d) Golgi

40. Which cell organelle is absent in prokaryotes?
(a) Plasma membrane
(b) Ribosome
(c) Nucleus
(d) Cytoplasm

41. Centrioles are absent in:
(a) Animal cells
(b) Bacterial cells
(c) Plant cells
(d) Both b & c

42. DNA replication occurs in:
(a) Ribosome
(b) Nucleolus
(c) Nucleus
(d) Cytoplasm

43. Which is the site of lipid synthesis?
(a) Smooth ER
(b) Rough ER
(c) Lysosome
(d) Nucleus

44. Which scientist stated "All cells arise from pre-existing cells"?
(a) Virchow
(b) Hooke
(c) Schleiden
(d) Schwann

45. Bacterial cell wall is made up of:
(a) Cellulose
(b) Chitin
(c) Peptidoglycan
(d) Protein

46. Photosynthesis occurs in:
(a) Chloroplast
(b) Chromoplast
(c) Leucoplast
(d) Mitochondria

47. Nucleolus is mainly involved in synthesis of:
(a) tRNA
(b) rRNA
(c) mRNA
(d) DNA

48. In prokaryotes, ribosomes are of:
(a) 70S type
(b) 80S type
(c) 60S type
(d) 90S type

49. Which controls hereditary characters?
(a) RNA
(b) DNA
(c) Protein
(d) ATP

50. The liquid part of cytoplasm is called:
(a) Nucleoplasm
(b) Protoplasm
(c) Cytosol
(d) Vacuole

Part B – Tissues (50 MCQs)

51. Which meristem helps in increase of length?
(a) Apical
(b) Lateral
(c) Intercalary
(d) Secondary

52. Secondary growth is due to:
(a) Apical meristem
(b) Lateral meristem
(c) Collenchyma
(d) Parenchyma

53. Water transport in plants is by:
(a) Xylem
(b) Phloem
(c) Parenchyma
(d) Collenchyma

54. Food transport is by:
(a) Xylem
(b) Phloem
(c) Collenchyma
(d) Guard cells

55. Husk of coconut is made of:
(a) Parenchyma
(b) Sclerenchyma
(c) Collenchyma
(d) Xylem

56. Guard cells are part of:
(a) Phloem
(b) Xylem
(c) Stomata
(d) Root hairs

57. Companion cells are associated with:
(a) Xylem
(b) Phloem
(c) Collenchyma
(d) None

58. Dead element of phloem is:
(a) Sieve tubes
(b) Companion cells
(c) Phloem fibres
(d) Phloem parenchyma

59. Dead element of xylem is:
(a) Tracheids
(b) Vessels
(c) Xylem fibres
(d) All of these

60. Which simple tissue provides mechanical support?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Phloem

61. Xylem fibres are:
(a) Living
(b) Dead
(c) Sometimes living
(d) None

62. Phloem transports food:
(a) Unidirectionally
(b) Bidirectionally
(c) Downward only
(d) None

63. Cork cells contain:
(a) Lignin
(b) Suberin
(c) Chitin
(d) Cutin

64. Thickened corners are seen in:
(a) Collenchyma
(b) Sclerenchyma
(c) Parenchyma
(d) Phloem

65. Function of phloem:
(a) Transport of minerals
(b) Transport of food
(c) Transport of gases
(d) Mechanical support

66. The tissue present in husk of coconut:
(a) Xylem
(b) Sclerenchyma fibres
(c) Phloem
(d) Collenchyma

67. Bone is a type of:
(a) Muscular tissue
(b) Nervous tissue
(c) Connective tissue
(d) Epithelial tissue

68. Ligaments connect:
(a) Bone to muscle
(b) Bone to bone
(c) Muscle to muscle
(d) Nerve to nerve

69. Tendons connect:
(a) Muscle to muscle
(b) Bone to muscle
(c) Bone to bone
(d) None

70. Which connective tissue stores fat?
(a) Ligament
(b) Areolar
(c) Adipose
(d) Cartilage

71. Cartilage is a:
(a) Connective tissue
(b) Nervous tissue
(c) Epithelial tissue
(d) None

72. The junction of two neurons is called:
(a) Synapse
(b) Node
(c) Dendrite
(d) Axon

73. Smallest unit of nervous system is:
(a) Axon
(b) Nerve
(c) Neuron
(d) Dendrite

74. Which muscle is involuntary & striated?
(a) Skeletal
(b) Smooth
(c) Cardiac
(d) All

75. Muscles responsible for voluntary movements are:
(a) Smooth
(b) Cardiac
(c) Skeletal
(d) All

76. Which tissue allows bending of young stems?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Xylem

77. Nerve impulses are carried by:
(a) Axon
(b) Dendrites
(c) Synapse
(d) None

78. Which connective tissue has fluid matrix?
(a) Bone
(b) Ligament
(c) Cartilage
(d) Blood

79. Epithelial tissue without intercellular space is:
(a) Cuboidal
(b) Columnar
(c) Squamous
(d) All

80. Which muscle never fatigues?
(a) Skeletal
(b) Smooth
(c) Cardiac
(d) None

81. Which plant tissue is dead at maturity?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Phloem parenchyma

82. Function of stomata:
(a) Respiration
(b) Transpiration
(c) Exchange of gases
(d) All

83. The thick cuticle is found in:
(a) Hydrophytes
(b) Xerophytes
(c) Mesophytes
(d) None

84. Which connective tissue is flexible but not elastic?
(a) Bone
(b) Ligament
(c) Cartilage
(d) Adipose

85. Which muscle tissue is unbranched and voluntary?
(a) Skeletal
(b) Cardiac
(c) Smooth
(d) None

86. Main water-conducting element in gymnosperms:
(a) Vessels
(b) Tracheids
(c) Fibres
(d) Parenchyma

87. Phloem in monocots lacks:
(a) Companion cells
(b) Phloem parenchyma
(c) Sieve tubes
(d) Phloem fibres

88. Which connective tissue joins muscle to bone?
(a) Ligament
(b) Tendon
(c) Cartilage
(d) Adipose

89. Main structural & functional unit of nervous tissue is:
(a) Brain
(b) Neuron
(c) Spinal cord
(d) Nerves

90. Which muscular tissue is spindle-shaped?
(a) Smooth
(b) Cardiac
(c) Skeletal
(d) None

91. Function of epidermis in plant:
(a) Protection
(b) Photosynthesis
(c) Transport
(d) Respiration

92. In desert plants, stomata are present:
(a) Only on upper surface
(b) Only on lower surface
(c) Both surfaces equally
(d) Sunken type

93. Collenchyma is absent in:
(a) Dicot stem
(b) Monocot stem
(c) Leaf petiole
(d) Young stem

94. Which connective tissue prevents joints from damage?
(a) Cartilage
(b) Bone
(c) Ligament
(d) Tendon

95. Which epithelial tissue forms kidney tubules?
(a) Squamous
(b) Columnar
(c) Cuboidal
(d) Ciliated

96. Which cells in xylem are living?
(a) Vessels
(b) Tracheids
(c) Xylem parenchyma
(d) Xylem fibres

97. Sieve tube cells lack:
(a) Cell wall
(b) Cytoplasm
(c) Nucleus
(d) Vacuole

98. Which simple tissue stores food in plants?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Xylem

99. Which connective tissue connects bone to bone?
(a) Ligament
(b) Tendon
(c) Cartilage
(d) Adipose

100. Phloem fibres are:
(a) Living
(b) Dead
(c) Semi-living
(d) None

Answer Key

Cell (1–50):
1-c, 2-c, 3-c, 4-b, 5-a, 6-a, 7-b, 8-a, 9-c, 10-c, 11-c, 12-b, 13-c, 14-a, 15-b,
16-b, 17-b, 18-c, 19-b, 20-b, 21-c, 22-c, 23-c, 24-c, 25-c, 26-b, 27-c, 28-b, 29-b, 30-b,
31-b, 32-b, 33-a, 34-b, 35-b, 36-a, 37-d, 38-a, 39-b, 40-c, 41-c, 42-c, 43-a, 44-a, 45-c,
46-a, 47-b, 48-a, 49-b, 50-c.

Tissues (51–100):
51-a, 52-b, 53-a, 54-b, 55-b, 56-c, 57-b, 58-c, 59-d, 60-c, 61-b, 62-b, 63-b, 64-a, 65-b,
66-b, 67-c, 68-b, 69-b, 70-c, 71-a, 72-a, 73-c, 74-c, 75-c, 76-b, 77-a, 78-d, 79-d, 80-c,
81-c, 82-d, 83-b, 84-c, 85-a, 86-b, 87-b, 88-b, 89-b, 90-a, 91-a, 92-d, 93-b, 94-a, 95-c,
96-c, 97-c, 98-a, 99-a, 100-b.

Answer Key of tissue

2025-09-02T11:48:00.007+05:30

Class 9 – Tissues (Hard Objective Questions with Answers)

1. Which of the following is a simple permanent tissue in plants?

→ (c) Collenchyma

Parenchyma, Collenchyma, Sclerenchyma = simple permanent; Xylem & Phloem = complex.

2. The thickening of cell wall at the corners is the characteristic of:

→ (b) Collenchyma

Collenchyma cells have uneven cellulose thickening at corners, provide flexibility.

3. Which xylem element is living?

→ (c) Xylem parenchyma

All others (tracheids, vessels, fibres) are dead; parenchyma is living.

4. Companion cells are found associated with:

→ (b) Phloem sieve tubes

They help in loading/unloading of food in sieve tubes.

5. Guard cells are a type of:

→ (d) Epidermal cells

Guard cells regulate opening and closing of stomata.

6. Cork cells are impervious to water due to deposition of:

→ (b) Suberin

Cork has suberin that makes it waterproof.

7. The protective tissue present on the surface of old woody stems is:

→ (b) Cork

Epidermis is replaced by cork in old stems.

8. Which tissue transports organic food in plants?

→ (b) Phloem

Phloem transports sugars from leaves to other parts.

9. Which among the following is NOT a component of xylem?

→ (b) Sieve tubes

Sieve tubes belong to phloem, not xylem.

10. Glandular epithelium is a modified form of:

→ (c) Epithelial tissue

Specialized to secrete substances.

11. Intercalary meristem is found at:

→ (c) Base of internodes and leaves

Helps in regrowth, e.g., grasses.

12. Which of the following connective tissues connects muscles to bones?

→ (c) Tendons

Tendons = muscle to bone, Ligaments = bone to bone.

13. Ligaments are made up of:

→ (c) Dense connective tissue

Very strong, slightly elastic, connects bones to bones.

14. The structural and functional unit of nervous tissue is:

→ (b) Neuron

Neuron transmits impulses.

15. Which muscle is involuntary, non-striated and spindle-shaped?

→ (b) Smooth muscle

Found in internal organs, involuntary in action.

16. Bone is a hard connective tissue due to deposition of:

→ (a) Calcium carbonate and calcium phosphate

These salts make bone hard and rigid.

17. Which connective tissue acts as a shock absorber between bones?

→ (b) Cartilage

Soft and flexible, cushions joints.

18. Which blood cells help in clotting?

→ (c) Platelets

Platelets release clotting factors.

19. The tissue which provides flexibility in plants is:

→ (b) Collenchyma

Provides mechanical support and flexibility.

20. The growth of plants in length is due to activity of:

→ (a) Apical meristem

Located at tips of roots and shoots, causes primary growth.

21. Nissl’s granules are found in:

→ (b) Neurons

Granules in neuron cell body, involved in protein synthesis.

22. In animals, stratified epithelium is mainly meant for:

→ (b) Protection

Many layers provide protection from mechanical injury.

23. Phloem fibres differ from xylem fibres in being:

→ (a) Living

Phloem fibres are living at maturity, xylem fibres are dead.

24. Which of the following tissues lacks intercellular space?

→ (b) Collenchyma

Cells are tightly packed, little or no intercellular space.

25. The muscle tissue present only in the walls of the heart is:

→ (c) Cardiac muscle

Involuntary, striated, branched, found only in heart.

---

✅ So the Answer Key (1–25) is:

1(c), 2(b), 3(c), 4(b), 5(d), 6(b), 7(b), 8(b), 9(b), 10(c),

11(c), 12(c), 13(c), 14(b), 15(b), 16(a), 17(b), 18(c), 19(b), 20(a),

21(b), 22(b), 23(a), 24(b), 25(c).

Second test class 9th Plant and animal tissue

2025-09-01T11:22:00.007+05:30

Class 9 – Tissues (Hard Objective Questions)

1. Which of the following is a simple permanent tissue in plants?

(a) Xylem

(b) Phloem

(d) Cambium

2. The thickening of cell wall at the corners is the characteristic of:

(a) Parenchyma

(b) Collenchyma

(d) Phloem

3. Which xylem element is living?

(a) Vessels

(b) Tracheids

(d) Fibres

4. Companion cells are found associated with:

(a) Xylem vessels

(b) Phloem sieve tubes

(d) Tracheids

5. Guard cells are a type of:

(a) Parenchyma

(b) Collenchyma

(d) Epidermal cells

6. Cork cells are impervious to water due to deposition of:

(a) Lignin

(b) Suberin

(d) Cellulose

7. The protective tissue present on the surface of old woody stems is:

(a) Epidermis

(b) Cork

(d) Trichome

8. Which tissue transports organic food in plants?

(a) Xylem

(b) Phloem

(d) Parenchyma

9. Which among the following is NOT a component of xylem?

(a) Tracheids

(b) Sieve tubes

(d) Fibres

10. Glandular epithelium is a modified form of:

(a) Muscular tissue

(b) Connective tissue

(d) Nervous tissue

11. Intercalary meristem is found at:

(a) Tip of root

(b) Tip of stem

(d) Cambium

12. Which of the following connective tissues connects muscles to bones?

(a) Ligaments

(b) Cartilage

(d) Areolar

13. Ligaments are made up of:

(a) Muscle fibres

(b) Bone cells

(d) Cartilage

14. The structural and functional unit of nervous tissue is:

(a) Axon

(b) Neuron

(d) Synapse

15. Which muscle is involuntary, non-striated and spindle-shaped?

(a) Skeletal muscle

(b) Smooth muscle

(d) Voluntary muscle

16. Bone is a hard connective tissue due to deposition of:

(a) Calcium carbonate and calcium phosphate

(b) Lignin

(d) Suberin

17. Which connective tissue acts as a shock absorber between bones?

(a) Ligament

(b) Cartilage

(d) Tendon

18. Which blood cells help in clotting?

(a) RBCs

(b) WBCs

(d) Plasma

19. The tissue which provides flexibility in plants is:

(a) Parenchyma

(b) Collenchyma

(d) Xylem

20. The growth of plants in length is due to activity of:

(a) Apical meristem

(b) Lateral meristem

(d) Secondary meristem

21. Nissl’s granules are found in:

(a) Muscle cells

(b) Neurons

(d) Xylem vessels

22. In animals, stratified epithelium is mainly meant for:

(a) Absorption

(b) Protection

(d) Conduction

23. Phloem fibres differ from xylem fibres in being:

(a) Living

(b) Non-living

(d) Dead

24. Which of the following tissues lacks intercellular space?

(a) Parenchyma

(b) Collenchyma

(d) Phloem

25. The muscle tissue present only in the walls of the heart is:

(a) Smooth muscle

(b) Skeletal muscle

(d) Connective muscle

Test for 9th cell

2025-08-30T11:23:00.004+05:30

Objective Questions with Options

1. Who discovered the cell for the first time?

(a) Robert Hooke (b) Schleiden (c) Schwann (d) Leeuwenhoek

2. The term "cell" was given by?

(a) Darwin (b) Robert Hooke (c) Mendel (d) Aristotle

3. Which is the smallest unit of life?

(a) Tissue (b) Organ (c) Cell (d) Organ system

4. The basic structural and functional unit of all living organisms is called?

(a) Organ (b) Tissue (c) Cell (d) Organ system

5. Who discovered nucleus in the cell?

(a) Robert Brown (b) Watson (c) Schleiden (d) Schwann

6. Which cell organelle is known as the powerhouse of the cell?

(a) Chloroplast (b) Ribosome (c) Mitochondria (d) Golgi body

7. Name the organelle responsible for photosynthesis.

(a) Mitochondria (b) Ribosome (c) Chloroplast (d) Lysosome

8. Which cell organelle is known as the "suicidal bag" of the cell?

(a) Lysosome (b) Vacuole (c) Nucleus (d) Plastid

9. Which organelle is double-membrane bound and contains its own DNA and ribosomes?

(a) Endoplasmic Reticulum (b) Ribosome (c) Mitochondria (d) Lysosome

10. What is the function of ribosomes?

(a) Respiration (b) Photosynthesis (c) Protein synthesis (d) Digestion

11. Which is the largest cell in the human body?

(a) Muscle cell (b) Nerve cell (c) Ovum (d) Liver cell

12. Name the outermost boundary of an animal cell.

(a) Cell wall (b) Plasma membrane (c) Nucleus (d) Cytoplasm

13. Which scientist proposed the cell theory?

(a) Darwin (b) Schleiden and Schwann (c) Mendel (d) Robert Koch

14. What is the function of plasma membrane?

(a) Photosynthesis (b) Control of entry and exit of substances (c) Protein synthesis (d) Digestion

15. What is the name of the fluid content inside the cell?

(a) Nucleoplasm (b) Cytoplasm (c) Vacuole (d) Ribosome

16. Which type of cell does not have a well-defined nucleus?

(a) Eukaryotic (b) Prokaryotic (c) Plant (d) Animal

17. Bacteria belong to which type of cell?

(a) Eukaryotic (b) Prokaryotic (c) Both (d) None

18. What is the site of protein synthesis in the cell?

(a) Ribosome (b) Nucleus (c) Mitochondria (d) Vacuole

19. Which organelle is called the "control centre of the cell"?

(a) Mitochondria (b) Chloroplast (c) Nucleus (d) Ribosome

20. In plant cells, food is stored in which organelle?

(a) Mitochondria (b) Chloroplast (c) Vacuole (d) Golgi body

21. Name the organelle responsible for intracellular digestion.

(a) Ribosome (b) Lysosome (c) Vacuole (d) Endoplasmic Reticulum

22. What is the basic difference between rough ER and smooth ER?

(a) Presence of ribosomes (b) Presence of mitochondria (c) Presence of DNA (d) Presence of Golgi bodies

23. Which organelle is responsible for respiration?

(a) Mitochondria (b) Ribosome (c) Vacuole (d) Nucleus

24. Which organelle helps in packaging and transportation of materials inside the cell?

(a) Golgi apparatus (b) Nucleus (c) Lysosome (d) Chloroplast

25. Which type of cells contain cell wall?

(a) Animal cells (b) Plant cells (c) Both (d) None

2025-08-22T23:08:00.000+05:30

ANSWER KEY :Class 11th Biology topics you requested: Frog, Cell: The Unit of Life, Cell Cycle, Biomolecules, Photosynthesis in Higher Plants, and Respiration in Plants.

2025-03-06T09:38:00.007+05:30

JAWAHAR NAVODAYA VIDYALYA JOGNA LOHARDAGA (JH)

TEST ANSWER

Class-11^th Sub-BIOLOGY

Here is a set of 30 multiple-choice questions (MCQs) based on the Class 11th Biology topics you requested: Frog, Cell: The Unit of Life, Cell Cycle, Biomolecules, Photosynthesis in Higher Plants, and Respiration in Plants.

Frog (Anatomy and Physiology)

1.       The heart of a frog has how many chambers?

o   A) 2

o   B) 3

o   C) 4

o   D) 5

Answer: B) 3

2.       Which part of the frog's brain is responsible for coordinating the movement?

o   A) Cerebrum

o   B) Cerebellum

o   C) Medulla oblongata

o   D) Optic lobes

Answer: B) Cerebellum

3.       Which of the following is a function of the frog’s skin?

o   A) Respiration

o   B) Protection

o   C) Excretion

o   D) All of the above

Answer: D) All of the above

4.       Which of the following is the respiratory organ in a frog during its aquatic life stage?

o   A) Lungs

o   B) Skin

o   C) Gills

o   D) Larynx

Answer: C) Gills

5.       Which structure in frogs is responsible for the release of urine?

o   A) Cloaca

o   B) Kidney

o   C) Urinary bladder

o   D) Ureter

Answer: A) Cloaca

6.       The reproductive organs of the frog are located in which region of the body?

o   A) Thoracic cavity

o   B) Abdominal cavity

o   C) Pelvic cavity

o   D) Cranial cavity

Answer: B) Abdominal cavity

Cell: The Unit of Life

7.       Which of the following organelles is involved in the synthesis of ribosomal RNA (rRNA)?

o   A) Nucleus

o   B) Endoplasmic reticulum

o   C) Nucleolus

o   D) Golgi apparatus

Answer: C) Nucleolus

8.       Which of the following is the function of the Golgi apparatus?

o   A) Protein synthesis

o   B) Photosynthesis

o   C) Packaging and transport of proteins

o   D) Storage of genetic material

Answer: C) Packaging and transport of proteins

9.       Which of the following is found only in plant cells?

o   A) Ribosomes

o   B) Mitochondria

o   C) Chloroplast

o   D) Nucleus

Answer: C) Chloroplast

10. The fluid-filled cavity inside the cell is called:

o   A) Cytoplasm

o   B) Nucleoplasm

o   C) Matrix

o   D) Cytosol

Answer: A) Cytoplasm

11. Which of the following structures is absent in prokaryotic cells?

o   A) Cell membrane

o   B) Ribosomes

o   C) Nucleus

o   D) Cytoplasm

Answer: C) Nucleus

12. The process of osmosis refers to the movement of water molecules from:

o   A) High to low concentration of solute

o   B) Low to high concentration of solute

o   C) High to low concentration of water

o   D) Low to high concentration of water

Answer: A) High to low concentration of solute

Cell Cycle

13. Which phase of the cell cycle is characterized by DNA replication?

o   A) G1 phase

o   B) S phase

o   C) G2 phase

o   D) M phase

Answer: B) S phase

14. During which phase of the cell cycle does the nuclear membrane disappear?

o   A) Prophase

o   B) Metaphase

o   C) Anaphase

o   D) Telophase

Answer: A) Prophase

15. Which stage of mitosis involves the separation of sister chromatids?

o   A) Prophase

o   B) Metaphase

o   C) Anaphase

o   D) Telophase

Answer: C) Anaphase

16. In which phase do the chromosomes align at the cell's equator?

o   A) Prophase

o   B) Metaphase

o   C) Anaphase

o   D) Telophase

Answer: B) Metaphase

17. What is the primary function of the G1 phase in the cell cycle?

o   A) DNA replication

o   B) Synthesis of proteins and organelles

o   C) Chromosome separation

o   D) Cytokinesis

Answer: B) Synthesis of proteins and organelles

18. Cytokinesis is the process of:

o   A) Splitting of the nucleus

o   B) Splitting of the cytoplasm

o   C) DNA replication

o   D) Formation of sister chromatids

Answer: B) Splitting of the cytoplasm

Biomolecules

19. Which of the following is NOT a function of proteins?

o   A) Catalyzing chemical reactions

o   B) Transporting molecules across membranes

o   C) Storing genetic information

o   D) Providing structural support

Answer: C) Storing genetic information

20. Which of the following is an example of a monosaccharide?

o   A) Starch

o   B) Glycogen

o   C) Glucose

o   D) Sucrose

Answer: C) Glucose

21. Enzymes are a type of:

o   A) Carbohydrate

o   B) Lipid

o   C) Protein

o   D) Nucleic acid

Answer: C) Protein

22. What is the building block of proteins?

o   A) Nucleotides

o   B) Fatty acids

o   C) Amino acids

o   D) Monosaccharides

Answer: C) Amino acids

23. The function of ATP in cells is to:

o   A) Store genetic information

o   B) Store energy

o   C) Synthesize proteins

o   D) Transport oxygen

Answer: B) Store energy

24. Which of the following is the primary function of lipids in the body?

o   A) Store genetic information

o   B) Provide insulation and energy

o   C) Carry out photosynthesis

o   D) Synthesize proteins

Answer: B) Provide insulation and energy

Photosynthesis in Higher Plants

25. The light-dependent reactions of photosynthesis occur in the:

o   A) Cytoplasm

o   B) Thylakoid membranes

o   C) Stroma

o   D) Nucleus

Answer: B) Thylakoid membranes

26. Which pigment is mainly responsible for the green color in plants?

o   A) Carotenoids

o   B) Chlorophyll a

o   C) Chlorophyll b

o   D) Phycocyanin

Answer: B) Chlorophyll a

27. Which of the following is produced during the light-dependent reactions of photosynthesis?

o   A) Oxygen

o   B) Glucose

o   C) NADPH and ATP

o   D) Carbon dioxide

Answer: C) NADPH and ATP

28. The Calvin cycle takes place in which part of the chloroplast?

o   A) Stroma

o   B) Thylakoids

o   C) Cytoplasm

o   D) Nucleus

Answer: A) Stroma

29. In the Calvin cycle, the carbon atoms from carbon dioxide are fixed into:

o   A) Glucose

o   B) Ribulose bisphosphate (RuBP)

o   C) Oxygen

o   D) NADPH

Answer: B) Ribulose bisphosphate (RuBP)

Respiration in Plants

30. The final electron acceptor in aerobic respiration is:

o   A) Oxygen

o   B) Carbon dioxide

o   C) NAD+

o   D) Water

Answer: A) Oxygen

 During anaerobic respiration in plants, glucose is converted into:

A) Lactic acid

B) Ethanol and carbon dioxide

C) Acetyl-CoA

D) Pyruvate

Answer: B) Ethanol and carbon dioxide

 Which of the following stages of cellular respiration takes place in the cytoplasm?

A) Glycolysis

B) Krebs cycle

C) Electron transport chain

D) Oxidative phosphorylation

Answer: A) Glycolysis

 In which organelle does the Krebs cycle take place?

A) Nucleus

B) Mitochondria

C) Chloroplast

D) Endoplasmic reticulum

Answer: B) Mitochondria

These 30 questions cover the key topics for Class 11 Biology related to Frog anatomy, cell biology, the cell cycle, biomolecules, photosynthesis, and respiration.

WELLCOME TO UNIT TEST 2ND =====FROM Frog, Cell: The Unit of Life, Cell Cycle, Biomolecules, Photosynthesis in Higher Plants, and Respiration in Plants.

2025-03-06T09:24:00.004+05:30

JAWAHAR NAVODAYA VIDYALYA JOGNA LOHARDAGA (JH)

TEST

Class-11^th

Sub-BIOLOGY

Here is a set of 33 multiple-choice questions (MCQs) based on the Class 11th Biology topics you requested: Frog, Cell: The Unit of Life, Cell Cycle, Biomolecules, Photosynthesis in Higher Plants, and Respiration in Plants.

Frog (Anatomy and Physiology)

1. The heart of a frog has how many chambers?

o A) 2

o B) 3

o C) 4

o D) 5

2. Which part of the frog's brain is responsible for coordinating the movement?

o A) Cerebrum

o B) Cerebellum

o C) Medulla oblongata

o D) Optic lobes

3. Which of the following is a function of the frog’s skin?

o A) Respiration

o B) Protection

o C) Excretion

o D) All of the above

4. Which of the following is the respiratory organ in a frog during its aquatic life stage?

o A) Lungs

o B) Skin

o C) Gills

o D) Larynx

5. Which structure in frogs is responsible for the release of urine?

o A) Cloaca

o B) Kidney

o C) Urinary bladder

o D) Ureter

6. The reproductive organs of the frog are located in which region of the body?

o A) Thoracic cavity

o B) Abdominal cavity

o C) Pelvic cavity

o D) Cranial cavity

Cell: The Unit of Life

7. Which of the following organelles is involved in the synthesis of ribosomal RNA (rRNA)?

o A) Nucleus

o B) Endoplasmic reticulum

o C) Nucleolus

o D) Golgi apparatus

8. Which of the following is the function of the Golgi apparatus?

o A) Protein synthesis

o B) Photosynthesis

o C) Packaging and transport of proteins

o D) Storage of genetic material

9. Which of the following is found only in plant cells?

o A) Ribosomes

o B) Mitochondria

o C) Chloroplast

o D) Nucleus

10. The fluid-filled cavity inside the cell is called:

o A) Cytoplasm

o B) Nucleoplasm

o C) Matrix

o D) Cytosol

11. Which of the following structures is absent in prokaryotic cells?

o A) Cell membrane

o B) Ribosomes

o C) Nucleus

o D) Cytoplasm

12. The process of osmosis refers to the movement of water molecules from:

o A) High to low concentration of solute

o B) Low to high concentration of solute

o C) High to low concentration of water

o D) Low to high concentration of water

Cell Cycle

13. Which phase of the cell cycle is characterized by DNA replication?

o A) G1 phase

o B) S phase

o C) G2 phase

o D) M phase

14. During which phase of the cell cycle does the nuclear membrane disappear?

o A) Prophase

o B) Metaphase

o C) Anaphase

o D) Telophase

15. Which stage of mitosis involves the separation of sister chromatids?

o A) Prophase

o B) Metaphase

o C) Anaphase

o D) Telophase

16. In which phase do the chromosomes align at the cell's equator?

o A) Prophase

o B) Metaphase

o C) Anaphase

o D) Telophase

17. What is the primary function of the G1 phase in the cell cycle?

o A) DNA replication

o B) Synthesis of proteins and organelles

o C) Chromosome separation

o D) Cytokinesis

18. Cytokinesis is the process of:

o A) Splitting of the nucleus

o B) Splitting of the cytoplasm

o C) DNA replication

o D) Formation of sister chromatids

Biomolecules

19. Which of the following is NOT a function of proteins?

o A) Catalyzing chemical reactions

o B) Transporting molecules across membranes

o C) Storing genetic information

o D) Providing structural support

20. Which of the following is an example of a monosaccharide?

o A) Starch

o B) Glycogen

o C) Glucose

o D) Sucrose

21. Enzymes are a type of:

o A) Carbohydrate

o B) Lipid

o C) Protein

o D) Nucleic acid

22. What is the building block of proteins?

o A) Nucleotides

o B) Fatty acids

o C) Amino acids

o D) Monosaccharides

23. The function of ATP in cells is to:

o A) Store genetic information

o B) Store energy

o C) Synthesize proteins

o D) Transport oxygen

24. Which of the following is the primary function of lipids in the body?

o A) Store genetic information

o B) Provide insulation and energy

o C) Carry out photosynthesis

o D) Synthesize proteins

Photosynthesis in Higher Plants

25. The light-dependent reactions of photosynthesis occur in the:

o A) Cytoplasm

o B) Thylakoid membranes

o C) Stroma

o D) Nucleus

26. Which pigment is mainly responsible for the green color in plants?

o A) Carotenoids

o B) Chlorophyll a

o C) Chlorophyll b

o D) Phycocyanin

27. Which of the following is produced during the light-dependent reactions of photosynthesis?

o A) Oxygen

o B) Glucose

o C) NADPH and ATP

o D) Carbon dioxide

28. The Calvin cycle takes place in which part of the chloroplast?

o A) Stroma

o B) Thylakoids

o C) Cytoplasm

o D) Nucleus

29. In the Calvin cycle, the carbon atoms from carbon dioxide are fixed into:

o A) Glucose

o B) Ribulose bisphosphate (RuBP)

o C) Oxygen

o D) NADPH

Respiration in Plants

30. The final electron acceptor in aerobic respiration is:

o A) Oxygen

o B) Carbon dioxide

o C) NAD+

o D) Water

31 During anaerobic respiration in plants, glucose is converted into:

A) Lactic acid
B) Ethanol and carbon dioxide
C) Acetyl-CoA
D) Pyruvate

32 Which of the following stages of cellular respiration takes place in the cytoplasm?

A) Glycolysis
B) Krebs cycle
C) Electron transport chain
D) Oxidative phosphorylation

33 In which organelle does the Krebs cycle take place?

A) Nucleus
B) Mitochondria
C) Chloroplast
D) Endoplasmic reticulum

ALL THE BEST

Match your answer (BIOLOGY 11TH FROM CH 01 TO 06)

2025-03-05T09:24:00.002+05:30

ANSWER KEY :

1. Living World

2. Biological Classification

3. Plant Kingdom

4. Animal Kingdom

5. Morphology of Flowering Plants

6. Anatomy of Flowering Plants

Chapter 1: Living World

1. Which of the following is a characteristic feature of living organisms?

o a) Growth

o b) Ability to move

o c) Ability to respond to stimuli

o d) Reproduction
Answer: d) Reproduction

2. The study of classification of organisms is called:

o a) Morphology

o b) Taxonomy

o c) Physiology

o d) Ecology
Answer: b) Taxonomy

3. Who proposed the binomial nomenclature system?

o a) Charles Darwin

o b) Carl Linnaeus

o c) Aristotle

o d) Gregor Mendel
Answer: b) Carl Linnaeus

4. The scientific name of human beings is:

o a) Homo sapiens

o b) Homo erectus

o c) Homo habilis

o d) Homo sapiens sapiens
Answer: a) Homo sapiens

5. Which of the following is a prokaryotic organism?

o a) Fungi

o b) Bacteria

o c) Algae

o d) Protozoa
Answer: b) Bacteria

Chapter 2: Biological Classification

6. Which kingdom includes only unicellular prokaryotic organisms?

o a) Protista

o b) Fungi

o c) Monera

o d) Plantae
Answer: c) Monera

7. Which of the following is a characteristic of Kingdom Fungi?

o a) They are unicellular and prokaryotic.

o b) They are multicellular and eukaryotic.

o c) They are autotrophic.

o d) They lack a cell wall.
Answer: b) They are multicellular and eukaryotic.

8. Who proposed the five-kingdom classification system?

o a) Charles Darwin

o b) Robert Whittaker

o c) Carl Linnaeus

o d) Gregor Mendel
Answer: b) Robert Whittaker

9. The process of conjugation in bacteria leads to:

o a) Asexual reproduction

o b) Genetic recombination

o c) Binary fission

o d) Spore formation
Answer: b) Genetic recombination

10. Which of the following is a characteristic of protozoa?

o a) They are multicellular organisms.

o b) They exhibit locomotion through flagella or cilia.

o c) They have a hard exoskeleton.

o d) They are autotrophic.
Answer: b) They exhibit locomotion through flagella or cilia

Chapter 3: Plant Kingdom

11. Which group of plants is non-vascular?

o a) Gymnosperms

o b) Angiosperms

o c) Pteridophytes

o d) Bryophytes
Answer: d) Bryophytes

12. The plant body of Bryophytes is:

o a) Sporophyte

o b) Gametophyte

o c) Both sporophyte and gametophyte

o d) None of the above
Answer: b) Gametophyte

13. The fertilized ovule develops into:

o a) Fruit

o b) Seed

o c) Flower

o d) Leaf
Answer: b) Seed

14. Which of the following plants have seeds but do not produce flowers?

o a) Angiosperms

o b) Gymnosperms

o c) Algae

o d) Mosses
Answer: b) Gymnosperms

15. The male reproductive organ in angiosperms is:

o a) Stigma

o b) Anther

o c) Ovary

o d) Style
Answer: b) Anther

Chapter 4: Animal Kingdom

16. Which of the following is a characteristic of the Phylum Chordata?

o a) Presence of a notochord

o b) Exoskeleton

o c) Bilateral symmetry

o d) Presence of a heart
Answer: a) Presence of a notochord

17. Which of the following animals belongs to the phylum Arthropoda?

o a) Earthworm

o b) Spider

o c) Fish

o d) Frog
Answer: b) Spider

18. Which of the following is the correct classification of the human being?

o a) Phylum: Chordata, Class: Mammalia

o b) Phylum: Arthropoda, Class: Mammalia

o c) Phylum: Mollusca, Class: Mammalia

o d) Phylum: Chordata, Class: Reptilia
Answer: a) Phylum: Chordata, Class: Mammalia

19. Which phylum is characterized by the presence of a segmented body?

o a) Arthropoda

o b) Annelida

o c) Mollusca

o d) Cnidaria
Answer: b) Annelida

20. Which of the following animals exhibits radial symmetry?

o a) Earthworm

o b) Frog

o c) Starfish

o d) Cat
Answer: c) Starfish

Chapter 5: Morphology of Flowering Plants

21. The root system in monocots is:

o a) Tap root system

o b) Fibrous root system

o c) Both tap and fibrous

o d) None of the above
Answer: b) Fibrous root system

22. Which of the following is a modified stem?

o a) Potato

o b) Carrot

o c) Radish

o d) Ginger
Answer: d) Ginger

23. Which part of the flower is responsible for the production of pollen grains?

o a) Anther

o b) Stigma

o c) Ovary

o d) Style
Answer: a) Anther

24. Which of the following is the edible part of the plant?

o a) Root in carrot

o b) Leaf in spinach

o c) Stem in potato

o d) All of the above
Answer: d) All of the above

25. The structure that connects the ovary to the stigma is called:

o a) Style

o b) Ovule

o c) Anther

o d) Pedicel
Answer: a) Style

Chapter 6: Anatomy of Flowering Plants

26. The tissue that conducts water in plants is:

o a) Phloem

o b) Xylem

o c) Parenchyma

o d) Collenchyma
Answer: b) Xylem

27. Which of the following is a characteristic feature of sclerenchyma tissue?

o a) Thin cell walls

o b) Cells are living

o c) Cells are lignified and dead

o d) Cells contain chlorophyll
Answer: c) Cells are lignified and dead

28. In which part of the plant is chloroplast found?

o a) Root

o b) Stem

o c) Leaf

o d) Flower
Answer: c) Leaf

29. The type of vascular tissue that transports food in plants is:

o a) Xylem

o b) Phloem

o c) Collenchyma

o d) Sclerenchyma
Answer: b) Phloem

30. The plant tissue responsible for growth in plants is:

o a) Collenchyma

o b) Xylem

o c) Meristematic tissue

o d) Phloem
Answer: c) Meristematic tissue

WELLCOME TO PRE EXAM PREPRATION SERIES FROM CH 01 TO 6

2025-03-04T11:43:00.000+05:30

JAWAHAR NAVODAYA VIDYALYA JOGNA LOHARDAGA (JH)

TEST

Class-11^th

Sub-BIOLOGY

Time– 1.5Hrs.

Here are MCQs from the following chapters of Class 11 Biology based on your request:

1. Living World

2. Biological Classification

3. Plant Kingdom

4. Animal Kingdom

5. Morphology of Flowering Plants

6. Anatomy of Flowering Plants

Chapter 1: Living World

1. Which of the following is a characteristic feature of living organisms?

o a) Growth

o b) Ability to move

o c) Ability to respond to stimuli

o d) Reproduction

2. The study of classification of organisms is called:

o a) Morphology

o b) Taxonomy

o c) Physiology

o d) Ecology

3. Who proposed the binomial nomenclature system?

o a) Charles Darwin

o b) Carl Linnaeus

o c) Aristotle

o d) Gregor Mendel

4. The scientific name of human beings is:

o a) Homo sapiens

o b) Homo erectus

o c) Homo habilis

o d) Homo sapiens sapiens

5. Which of the following is a prokaryotic organism?

o a) Fungi

o b) Bacteria

o c) Algae

o d) Protozoa

Chapter 2: Biological Classification

6. Which kingdom includes only unicellular prokaryotic organisms?

o a) Protista

o b) Fungi

o c) Monera

o d) Plantae

7. Which of the following is a characteristic of Kingdom Fungi?

o a) They are unicellular and prokaryotic.

o b) They are multicellular and eukaryotic.

o c) They are autotrophic.

o d) They lack a cell wall.

8. Who proposed the five-kingdom classification system?

o a) Charles Darwin

o b) Robert Whittaker

o c) Carl Linnaeus

o d) Gregor Mendel

9. The process of conjugation in bacteria leads to:

o a) Asexual reproduction

o b) Genetic recombination

o c) Binary fission

o d) Spore formation

10. Which of the following is a characteristic of protozoa?

o a) They are multicellular organisms.

o b) They exhibit locomotion through flagella or cilia.

o c) They have a hard exoskeleton.

o d) They are autotrophic.

Chapter 3: Plant Kingdom

11. Which group of plants is non-vascular?

o a) Gymnosperms

o b) Angiosperms

o c) Pteridophytes

o d) Bryophytes

12. The plant body of Bryophytes is:

o a) Sporophyte

o b) Gametophyte

o c) Both sporophyte and gametophyte

o d) None of the above

13. The fertilized ovule develops into:

o a) Fruit

o b) Seed

o c) Flower

o d) Leaf

14. Which of the following plants have seeds but do not produce flowers?

o a) Angiosperms

o b) Gymnosperms

o c) Algae

o d) Mosses

15. The male reproductive organ in angiosperms is:

o a) Stigma

o b) Anther

o c) Ovary

o d) Style

Chapter 4: Animal Kingdom

16. Which of the following is a characteristic of the Phylum Chordata?

o a) Presence of a notochord

o b) Exoskeleton

o c) Bilateral symmetry

o d) Presence of a heart

17. Which of the following animals belongs to the phylum Arthropoda?

o a) Earthworm

o b) Spider

o c) Fish

o d) Frog

18. Which of the following is the correct classification of the human being?

o a) Phylum: Chordata, Class: Mammalia

o b) Phylum: Arthropoda, Class: Mammalia

o c) Phylum: Mollusca, Class: Mammalia

o d) Phylum: Chordata, Class: Reptilia

19. Which phylum is characterized by the presence of a segmented body?

o a) Arthropoda

o b) Annelida

o c) Mollusca

o d) Cnidaria

20. Which of the following animals exhibits radial symmetry?

o a) Earthworm

o b) Frog

o c) Starfish

o d) Cat

Chapter 5: Morphology of Flowering Plants

21. The root system in monocots is:

o a) Tap root system

o b) Fibrous root system

o c) Both tap and fibrous

o d) None of the above

22. Which of the following is a modified stem?

o a) Potato

o b) Carrot

o c) Radish

o d) Ginger

23. Which part of the flower is responsible for the production of pollen grains?

o a) Anther

o b) Stigma

o c) Ovary

o d) Style

24. Which of the following is the edible part of the plant?

o a) Root in carrot

o b) Leaf in spinach

o c) Stem in potato

o d) All of the above

25. The structure that connects the ovary to the stigma is called:

o a) Style

o b) Ovule

o c) Anther

o d) Pedicel

Chapter 6: Anatomy of Flowering Plants

26. The tissue that conducts water in plants is:

o a) Phloem

o b) Xylem

o c) Parenchyma

o d) Collenchyma

27. Which of the following is a characteristic feature of sclerenchyma tissue?

o a) Thin cell walls

o b) Cells are living

o c) Cells are lignified and dead

o d) Cells contain chlorophyll

28. In which part of the plant is chloroplast found?

o a) Root

o b) Stem

o c) Leaf

o d) Flower

29. The type of vascular tissue that transports food in plants is:

o a) Xylem

o b) Phloem

o c) Collenchyma

o d) Sclerenchyma

30. The plant tissue responsible for growth in plants is:

o a) Collenchyma

o b) Xylem

o c) Meristematic tissue

o d) Phloem

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