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Writer's pictureVikas Yadav

Important MCQs From Chapter Control and Coordination | Class X | CBSE Board | Biology Science

 Multiple Choice Questions

 

1. Which part of the brain controls voluntary actions? 

   a) Cerebrum 

   b) Cerebellum 

   c) Medulla 

   d) Hypothalamus 

 

2. What is the function of sensory neurons? 

   a) To transmit signals from the brain to muscles 

   b) To transmit signals from muscles to the brain 

   c) To carry sensory information from receptors to the central nervous system 

   d) To carry motor information from the central nervous system to the effectors 

 

3. Which hormone is known as the stress hormone? 

   a) Insulin 

   b) Adrenaline 

   c) Thyroxine 

   d) Glucagon 

 

4. What does the central nervous system consist of? 

   a) Brain and spinal cord 

   b) Brain and nerves 

   c) Spinal cord and nerves 

   d) Brain only 

 

5. Which of the following is a plant hormone responsible for cell division? 

   a) Auxin 

   b) Gibberellin 

   c) Cytokinin 

   d) Abscisic acid 

 

6. Which type of neuron carries impulses from the sense organs to the brain? 

   a) Sensory neuron 

   b) Motor neuron 

   c) Interneuron 

   d) Efferent neuron 

 

7. What is the function of the cerebellum? 

   a) Controls voluntary actions 

   b) Coordinates muscular activities 

   c) Regulates temperature 

   d) Controls heartbeat 

 

8. Which gland secretes the hormone insulin? 

   a) Adrenal 

   b) Thyroid 

   c) Pituitary 

   d) Pancreas 

 

9. What is the role of the medulla in the brain? 

   a) Memory storage 

   b) Reflex actions 

   c) Involuntary actions like breathing and heartbeat 

   d) Voluntary muscle movement 

 

10. What is the basic unit of the nervous system? 

   a) Brain 

   b) Neuron 

   c) Nerve 

   d) Spinal cord 

 

11. Which plant hormone is responsible for ripening of fruits? 

   a) Auxin 

   b) Gibberellin 

   c) Ethylene 

   d) Abscisic acid 

 

12. What does the peripheral nervous system include? 

   a) Brain and spinal cord 

   b) Cranial nerves and spinal nerves 

   c) Only brain 

   d) Only spinal cord 

 

13. What is the term used for directional movement of a plant part in response to light? 

   a) Geotropism 

   b) Hydrotropism 

   c) Phototropism 

   d) Thigmotropism 

 

14. Which hormone is involved in the regulation of metabolism? 

   a) Adrenaline 

   b) Thyroxine 

   c) Insulin 

   d) Growth hormone 

 

15. What is the main function of the sympathetic nervous system? 

   a) Calms the body after stress 

   b) Prepares the body for 'fight or flight' 

   c) Regulates digestion 

   d) Controls voluntary muscles 

 

16. In plants, what is the role of abscisic acid? 

   a) Promotes growth 

   b) Promotes seed dormancy and closing of stomata 

   c) Promotes flowering 

   d) Promotes fruit ripening 

 

17. Which part of the brain is associated with emotions? 

   a) Cerebrum 

   b) Medulla 

   c) Hypothalamus 

   d) Cerebellum 

 

18. What type of neuron is involved in reflex actions? 

   a) Sensory neuron only 

   b) Motor neuron only 

   c) Interneuron only 

   d) Sensory, motor, and interneurons 

 

19. What is the function of the spinal cord? 

   a) Controls involuntary actions 

   b) Transmits signals between the brain and the rest of the body 

   c) Controls emotions 

   d) Coordinates balance 

 

20. Which hormone is known as the "growth hormone"? 

   a) Adrenaline 

   b) Insulin 

   c) Thyroxine 

   d) Somatotropin 

 

21. What triggers the closing of stomata in plants? 

   a) High light intensity 

   b) Presence of abscisic acid 

   c) High humidity 

   d) Low carbon dioxide levels 

 

22. Which hormone regulates the sleep-wake cycle in humans? 

   a) Melatonin 

   b) Serotonin 

   c) Dopamine 

   d) Adrenaline 

 

23. What is the function of the pituitary gland? 

   a) Produces adrenaline 

   b) Regulates metabolism 

   c) Acts as a master gland controlling other glands 

   d) Controls blood sugar levels 

 

24. What type of movement is shown by a plant in response to touch? 

   a) Phototropism 

   b) Geotropism 

   c) Thigmotropism 

   d) Hydrotropism 

 

25. Which part of the neuron receives signals from other neurons? 

   a) Axon 

   b) Dendrite 

   c) Synapse 

   d) Myelin sheath 

 

26. Which of the following is not a plant hormone? 

   a) Auxin 

   b) Insulin 

   c) Gibberellin 

   d) Ethylene 

 

27. What is the role of myelin sheath in neurons? 

   a) Produces neurotransmitters 

   b) Protects and insulates the nerve fiber 

   c) Stores energy 

   d) Transmits nerve impulses 

 

28. What is geotropism? 

   a) Movement in response to light 

   b) Movement in response to gravity 

   c) Movement in response to touch 

   d) Movement in response to water 

 

29. What part of the brain is responsible for regulating hunger and thirst? 

   a) Cerebellum 

   b) Cerebrum 

   c) Medulla 

   d) Hypothalamus 

 

30. Which part of the eye regulates the amount of light entering it? 

   a) Lens 

   b) Retina 

   c) Cornea 

   d) Iris 

 

31. What is the primary function of neurotransmitters? 

   a) To protect neurons 

   b) To transmit electrical signals 

   c) To communicate chemical signals between neurons 

   d) To store energy in neurons 

 

32. Which gland is located at the base of the brain? 

   a) Thyroid 

   b) Adrenal 

   c) Pituitary 

   d) Pancreas 

 

33. Which part of the brain is involved in the control of respiration? 

   a) Medulla 

   b) Cerebrum 

   c) Cerebellum 

   d) Hypothalamus 

 

34. What is the role of gibberellin in plants? 

   a) Promotes fruit ripening 

   b) Inhibits growth 

   c) Stimulates stem elongation and seed germination 

   d) Causes leaf fall 

 

35. Which type of muscle is controlled by the autonomic nervous system? 

   a) Skeletal muscles 

   b) Cardiac muscles 

   c) Voluntary muscles 

   d) Smooth muscles 

 

36. What is the main function of the parasympathetic nervous system? 

   a) Increases heart rate 

   b) Stimulates digestion and calms the body 

   c) Prepares the body for emergencies 

   d) Controls voluntary movements 

 

37. Which plant hormone helps in the phototropism response? 

   a) Cytokinin 

   b) Auxin 

   c) Abscisic acid 

   d) Gibberellin 

 

38. What are the sensory receptors for smell called? 

   a) Gustatory receptors 

   b) Olfactory receptors 

   c) Photoreceptors 

   d) Mechanoreceptors 

 

39. What is the function of the somatic nervous system? 

   a) Controls involuntary muscles 

   b) Regulates the internal organs 

   c) Controls voluntary movements and reflex actions 

   d) Controls emotional responses 

 

40. What type of response is shown by the roots of a plant towards gravity? 

   a) Positive geotropism 

   b) Negative geotropism 

   c) Positive phototropism 

   d) Negative phototropism 

 

41. Which of the following is a characteristic of a reflex action? 

   a) Voluntary 

   b) Slow 

   c) Conscious 

   d) Involuntary 

 

42. Which part of the neuron is responsible for transmitting impulses away from the cell body? 

   a) Dendrite 

   b) Axon 

   c) Myelin sheath 

   d) Synapse 

 

43. What is the primary function of the autonomic nervous system? 

  a) Controls voluntary muscles 

  b) Regulates involuntary functions 

  c) Stimulates skeletal muscles 

  d) Regulates thought processes 

 

44. Which hormone controls the rate of metabolism in the body? 

   a) Insulin 

   b) Adrenaline 

   c) Thyroxine  

   d) Estrogen 

 

45. Which structure in the plant detects the direction of light? 

   a) Root tip 

   b) Shoot tip 

   c) Leaf blade 

   d) Stem 

 

46. Which part of the human brain controls balance and coordination? 

   a) Cerebrum 

   b) Medulla 

   c) Hypothalamus 

   d) Cerebellum 

 

47. Which hormone is released in response to low blood sugar levels? 

   a) Insulin 

   b) Glucagon 

   c) Adrenaline 

   d) Thyroxine 

 

48. Which of the following describes the role of the hypothalamus? 

   a) Controls voluntary actions 

   b) Regulates the release of hormones from the pituitary gland 

   c) Controls balance and coordination 

   d) Controls the heartbeat 

 

49. Which type of plant movement is shown by the opening and closing of flowers? 

   a) Nastic movement 

   b) Phototropism 

   c) Geotropism 

   d) Hydrotropism 

 

50. What is the role of auxins in plants? 

   a) Inhibit cell elongation 

   b) Promote cell elongation 

   c) Cause fruit ripening 

   d) Induce seed dormancy 

 

 Answers

 

1. a) Cerebrum 

2. c) To carry sensory information from receptors to the central nervous system 

3. b) Adrenaline 

4. a) Brain and spinal cord 

5. c) Cytokinin 

6. a) Sensory neuron 

7. b) Coordinates muscular activities 

8. d) Pancreas 

9. c) Involuntary actions like breathing and heartbeat 

10. b) Neuron 

11. c) Ethylene 

12. b) Cranial nerves and spinal nerves 

13. c) Phototropism 

14. b) Thyroxine 

15. b) Prepares the body for 'fight or flight' 

16. b) Promotes seed dormancy and closing of stomata 

17. c) Hypothalamus 

18. d) Sensory, motor, and interneurons 

19. b) Transmits signals between the brain and the rest of the body 

20. d) Somatotropin 

21. b) Presence of abscisic acid 

22. a) Melatonin 

23. c) Acts as a master gland controlling other glands 

24. c) Thigmotropism 

25. b) Dendrite 

26. b) Insulin 

27. b) Protects and insulates the nerve fiber 

28. b) Movement in response to gravity 

29. d) Hypothalamus 

30. d) Iris 

31. c) To communicate chemical signals between neurons 

32. c) Pituitary 

33. a) Medulla 

34. c) Stimulates stem elongation and seed germination 

35. d) Smooth muscles 

36. b) Stimulates digestion and calms the body 

37. b) Auxin 

38. b) Olfactory receptors 

39. c) Controls voluntary movements and reflex actions 

40. a) Positive geotropism 

41. d) Involuntary 

42. b) Axon 

43. b) Regulates involuntary functions 

44. c) Thyroxine 

45. b) Shoot tip 

46. d) Cerebellum 

47. b) Glucagon 

48. b) Regulates the release of hormones from the pituitary gland 

49. a) Nastic movement 

50. b) Promote cell elongation 

 

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