NCERT Book Class 10th SCIENCE MCQ
Chapter 6 : Control and Coordination
Multiple-Choice Questions (MCQs) with Answers
1. Chemical coordination in plants is carried out by?
a) Hormones
b) Nervous system
c) Enzymes
d) Blood
Answer: a) Hormones
2. Which part of the human brain maintains body balance?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Hypothalamus
Answer: b) Cerebellum
3. Phototropism in plants is caused by which hormone?
a) Gibberellin
b) Auxin
c) Cytokinin
d) Abscisic acid
Answer: b) Auxin
4. In humans, the thyroxine hormone is secreted by which gland?
a) Pancreas
b) Thyroid
c) Pituitary gland
d) Adrenal
Answer: b) Thyroid
5. What is the long extension of a nerve cell called?
a) Dendrite
b) Axon
c) Synapse
d) Nucleus
Answer: b) Axon
6. Which part of the brain is responsible for reflex actions?
a) Cerebrum
b) Spinal cord
c) Medulla
d) Cerebellum
Answer: b) Spinal cord
7. The growth of plant roots towards water is called?
a) Phototropism
b) Hydrotropism
c) Geotropism
d) Chemotropism
Answer: b) Hydrotropism
8. What is the function of the insulin hormone?
a) Increase blood sugar
b) Decrease blood sugar
c) Protein synthesis
d) Control growth
Answer: b) Decrease blood sugar
9. The “Fight or Flight” response in the human body is caused by which hormone?
a) Insulin
b) Adrenaline
c) Thyroxine
d) Estrogen
Answer: b) Adrenaline
10. The wilting of leaves in plants is caused by which hormone?
a) Auxin
b) Gibberellin
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
11. Which is the largest part of the human brain?
a) Cerebellum
b) Cerebrum
c) Medulla
d) Thalamus
Answer: b) Cerebrum
12. How is a nerve impulse transmitted?
a) Synapse
b) Blood
c) Lymph
d) Cartilage
Answer: a) Synapse
13. Which hormone is used to ripen fruits in plants?
a) Auxin
b) Ethylene
c) Gibberellin
d) Cytokinin
Answer: b) Ethylene
14. Which nervous system controls heart rate in the human body?
a) Central nervous system
b) Autonomic nervous system
c) Peripheral nervous system
d) Sensory nervous system
Answer: b) Autonomic nervous system
15. In plants, geotropism is observed in which part?
a) Leaves
b) Roots
c) Flowers
d) Stem
Answer: b) Roots
16. Growth hormone (GH) in the human body is secreted by which gland?
a) Thyroid
b) Pituitary gland
c) Pancreas
d) Adrenal
Answer: b) Pituitary gland
17. What is the site of chemical signal exchange between neurons called?
a) Axon
b) Dendrite
c) Synapse
d) Myelin sheath
Answer: c) Synapse
18. Which part of the human brain controls respiration and heart rate?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Hypothalamus
Answer: c) Medulla
19. Which hormone induces cell division in plants?
a) Auxin
b) Cytokinin
c) Abscisic acid
d) Gibberellin
Answer: b) Cytokinin
20. Diabetes is caused by the deficiency of which hormone?
a) Insulin
b) Glucagon
c) Thyroxine
d) Adrenaline
Answer: a) Insulin
21. The bending of plant leaves towards sunlight for photosynthesis is called?
a) Hydrotropism
b) Phototropism
c) Geotropism
d) Chemotropism
Answer: b) Phototropism
22. Temperature regulation in the human body is controlled by?
a) Thyroid
b) Hypothalamus
c) Pancreas
d) Adrenal
Answer: b) Hypothalamus
23. Which hormone inhibits seed germination in plants?
a) Auxin
b) Gibberellin
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
24. Which hormone regulates blood pressure in the human body?
a) Insulin
b) Adrenaline
c) Vasopressin
d) Thyroxine
Answer: c) Vasopressin
25. What is the functional unit of the nervous system?
a) Neuron
b) Hormone
c) Enzyme
d) Gland
Answer: a) Neuron
26. Which hormone induces flowering in plants?
a) Auxin
b) Florigen
c) Gibberellin
d) Cytokinin
Answer: b) Florigen
27. Which hormone regulates calcium metabolism in the human body?
a) Insulin
b) Parathormone
c) Thyroxine
d) Adrenaline
Answer: b) Parathormone
28. Which hormone is used to produce fruits artificially in plants?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: a) Auxin
29. In the human body, the ‘Anti-Diuretic Hormone’ (ADH) is secreted by which gland?
a) Pancreas
b) Pituitary gland
c) Thyroid
d) Adrenal
Answer: b) Pituitary gland
30. Leaf fall in plants is caused by which hormone?
a) Auxin
b) Abscisic acid
c) Ethylene
d) Cytokinin
Answer: c) Ethylene
31. In the human body, the ‘Testosterone’ hormone is secreted by which gland?
a) Ovaries
b) Testes
c) Pancreas
d) Thyroid
Answer: b) Testes
32. The growth of plant roots deep into the soil indicates what?
a) Phototropism
b) Geotropism
c) Hydrotropism
d) Chemotropism
Answer: b) Geotropism
33. Which part of the human brain controls emotions?
a) Cerebrum
b) Limbic system
c) Cerebellum
d) Medulla
Answer: b) Limbic system
34. What is the process of producing seedless fruits in plants called?
a) Parthenocarpy
b) Gibberellin treatment
c) Auxin treatment
d) Ethylene treatment
Answer: a) Parthenocarpy
35. In the human body, the ‘Cortisol’ hormone is secreted by which gland?
a) Thyroid
b) Adrenal
c) Pancreas
d) Pituitary gland
Answer: b) Adrenal
36. The growth of plant stems towards light is called?
a) Positive phototropism
b) Negative phototropism
c) Positive geotropism
d) Negative hydrotropism
Answer: a) Positive phototropism
37. In the human body, the ‘Melatonin’ hormone is secreted by which gland?
a) Pineal gland
b) Thyroid
c) Pancreas
d) Adrenal
Answer: a) Pineal gland
38. Which hormone induces flowering in plants?
a) Florigen
b) Auxin
c) Gibberellin
d) Cytokinin
Answer: a) Florigen
39. In the human body, the ‘Prolactin’ hormone is secreted by which gland?
a) Thyroid
b) Pituitary gland
c) Pancreas
d) Adrenal
Answer: b) Pituitary gland
40. Negative phototropism in plant roots indicates that:
a) Roots grow away from light
b) Roots grow towards light
c) Roots grow towards water
d) Roots grow towards gravity
Answer: a) Roots grow away from light
41. What is the function of the ‘Oxytocin’ hormone in the human body?
a) Milk secretion
b) Blood pressure regulation
c) Inducing growth
d) Blood sugar control
Answer: a) Milk secretion
42. Which hormone promotes seed germination in plants?
a) Auxin
b) Gibberellin
c) Abscisic acid
d) Cytokinin
Answer: b) Gibberellin
43. What is the function of the ‘Glucagon’ hormone in the human body?
a) Increase blood sugar
b) Decrease blood sugar
c) Protein synthesis
d) Fat metabolism
Answer: a) Increase blood sugar
44. The shedding of leaves in plants is caused by which hormone?
a) Auxin
b) Ethylene
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
45. In the human body, the ‘Thyroxine’ hormone is synthesized in the presence of which mineral?
a) Iodine
b) Calcium
c) Iron
d) Zinc
Answer: a) Iodine
46. Which hormone accelerates the ripening of fruits in plants?
a) Auxin
b) Ethylene
c) Gibberellin
d) Cytokinin
Answer: b) Ethylene
47. Which disorder is caused by excessive ‘Growth Hormone’ (GH) in the human body?
a) Dwarfism
b) Acromegaly
c) Diabetes
d) Goiter
Answer: b) Acromegaly
48. The upward growth of plant stems indicates what?
a) Positive geotropism
b) Negative geotropism
c) Positive phototropism
d) Negative hydrotropism
Answer: b) Negative geotropism
49. In the human body, the ‘Estrogen’ hormone is secreted by which gland?
a) Ovaries
b) Testes
c) Pancreas
d) Thyroid
Answer: a) Ovaries
50. Cell elongation in plants is caused by which hormone?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: a) Auxin
Additional MCQs (Previous Year Board Questions Included)
1. Which hormone is responsible for phototropism in plants?
a) Gibberellin
b) Auxin
c) Cytokinin
d) Abscisic acid
Answer: b) Auxin
2. Which hormone controls heart rate in humans?
a) Insulin
b) Adrenaline
c) Thyroxine
d) Vasopressin
Answer: b) Adrenaline
3. What is the growth of plant roots towards water called?
a) Phototropism
b) Hydrotropism
c) Geotropism
d) Chemotropism
Answer: b) Hydrotropism
4. Which part of the human brain is responsible for memory?
a) Cerebrum
b) Hippocampus
c) Cerebellum
d) Medulla
Answer: b) Hippocampus
5. Which hormone inhibits seed germination in plants?
a) Auxin
b) Gibberellin
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
6. Which organ secretes ‘Insulin’ in the human body?
a) Liver
b) Pancreas
c) Thyroid
d) Adrenal gland
Answer: b) Pancreas
7. Which hormone is used to ripen fruits in plants?
a) Auxin
b) Ethylene
c) Gibberellin
d) Cytokinin
Answer: b) Ethylene
8. Which gland secretes ‘Growth Hormone’ (GH) in humans?
a) Thyroid
b) Pituitary gland
c) Pancreas
d) Adrenal
Answer: b) Pituitary gland
9. What does the upward growth of plant stems indicate?
a) Positive geotropism
b) Negative geotropism
c) Positive phototropism
d) Negative hydrotropism
Answer: b) Negative geotropism
10. What is the function of ‘Cortisol’ hormone in humans?
a) Stress response
b) Blood sugar control
c) Growth stimulation
d) Milk secretion
Answer: a) Stress response
11. Which hormone causes leaf fall in plants?
a) Auxin
b) Ethylene
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
12. Which gland secretes ‘Melatonin’ hormone in humans?
a) Pineal gland
b) Thyroid
c) Pancreas
d) Adrenal
Answer: a) Pineal gland
13. What is the process of producing seedless fruits called?
a) Parthenocarpy
b) Gibberellin treatment
c) Auxin treatment
d) Ethylene treatment
Answer: a) Parthenocarpy
14. Which gland secretes ‘Testosterone’ hormone in humans?
a) Ovaries
b) Testes
c) Pancreas
d) Thyroid
Answer: b) Testes
15. Which hormone promotes cell division in plants?
a) Auxin
b) Cytokinin
c) Abscisic acid
d) Gibberellin
Answer: b) Cytokinin
16. What is the function of ‘Oxytocin’ hormone in humans?
a) Induces labor pain
b) Controls blood pressure
c) Stimulates growth
d) Regulates blood sugar
Answer: a) Induces labor pain
17. What does the downward growth of roots in soil indicate?
a) Positive geotropism
b) Negative geotropism
c) Positive phototropism
d) Negative hydrotropism
Answer: a) Positive geotropism
18. What is the function of ‘Prolactin’ hormone in humans?
a) Milk production
b) Blood pressure control
c) Growth stimulation
d) Blood sugar regulation
Answer: a) Milk production
19. Which hormone induces flowering in plants?
a) Auxin
b) Florigen
c) Gibberellin
d) Cytokinin
Answer: b) Florigen
20. What is the function of ‘Glucagon’ hormone in humans?
a) Increases blood sugar
b) Decreases blood sugar
c) Protein synthesis
d) Fat metabolism
Answer: a) Increases blood sugar
21. Which hormone causes wilting of leaves in plants?
a) Auxin
b) Ethylene
c) Abscisic acid
d) Cytokinin
Answer: c) Abscisic acid
22. Which mineral is required for ‘Thyroxine’ hormone production?
a) Iodine
b) Calcium
c) Iron
d) Zinc
Answer: a) Iodine
23. Which hormone accelerates fruit ripening in plants?
a) Auxin
b) Ethylene
c) Gibberellin
d) Cytokinin
Answer: b) Ethylene
24. Which gland secretes ‘Estrogen’ hormone in humans?
a) Ovaries
b) Testes
c) Pancreas
d) Thyroid
Answer: a) Ovaries
25. Which hormone causes cell elongation in plants?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: a) Auxin