Chapter 7 – Control and Coordination – MCQs
Chapter 7 – Control and Coordination – MCQs (Part 1: Q1–Q25)
Q1. The structural and functional unit of the nervous system is:
a) Brain
b) Nephron
c) Neuron ✅
d) Axon
Answer: c) Neuron
Explanation: Neurons are specialized cells that transmit nerve impulses.
Q2. The longest part of a neuron is:
a) Axon ✅
b) Dendrite
c) Cell body
d) Nucleus
Answer: a) Axon
Explanation: Axon carries impulses away from the cell body and can be very long.
Q3. The gap between two neurons is called:
a) Axon
b) Synapse ✅
c) Dendron
d) Medulla
Answer: b) Synapse
Explanation: Synapse is a junction where transmission of impulse occurs via neurotransmitters.
Q4. The largest part of the human brain is:
a) Cerebrum ✅
b) Cerebellum
c) Medulla oblongata
d) Pons
Answer: a) Cerebrum
Explanation: Cerebrum controls thinking, memory, emotions, and voluntary actions.
Q5. Which part of the brain controls posture and balance?
a) Cerebrum
b) Cerebellum ✅
c) Medulla
d) Hypothalamus
Answer: b) Cerebellum
Explanation: Cerebellum regulates muscle coordination, posture, and balance.
Q6. Which part of the brain controls involuntary actions like breathing and heartbeat?
a) Cerebellum
b) Medulla oblongata ✅
c) Cerebrum
d) Pons
Answer: b) Medulla oblongata
Explanation: Medulla controls vital involuntary functions such as respiration and heartbeat.
Q7. Reflex actions are controlled by:
a) Brain
b) Spinal cord ✅
c) Cerebrum
d) Cerebellum
Answer: b) Spinal cord
Explanation: Reflexes are quick, automatic responses mediated by the spinal cord.
Q8. Which plant hormone is responsible for cell elongation?
a) Auxin ✅
b) Cytokinin
c) Gibberellin
d) Abscisic acid
Answer: a) Auxin
Explanation: Auxins promote cell elongation and are involved in phototropism.
Q9. Which hormone promotes cell division in plants?
a) Auxin
b) Cytokinin ✅
c) Ethylene
d) Abscisic acid
Answer: b) Cytokinin
Explanation: Cytokinins stimulate cytokinesis (cell division).
Q10. Which hormone promotes the ripening of fruits?
a) Gibberellin
b) Ethylene ✅
c) Auxin
d) Cytokinin
Answer: b) Ethylene
Explanation: Ethylene is a gaseous plant hormone that regulates fruit ripening.
Q11. The hormone that promotes dormancy in seeds is:
a) Auxin
b) Cytokinin
c) Abscisic acid ✅
d) Gibberellin
Answer: c) Abscisic acid
Explanation: Abscisic acid induces dormancy and closes stomata during stress.
Q12. The hormone that helps in the growth of stem and leaves is:
a) Gibberellin ✅
b) Cytokinin
c) Auxin
d) Ethylene
Answer: a) Gibberellin
Explanation: Gibberellins promote stem elongation and leaf growth.
Q13. Tropic movement in plants is:
a) Growth-dependent ✅
b) Growth-independent
c) Random
d) Non-directional
Answer: a) Growth-dependent
Explanation: Tropic movements (phototropism, geotropism) are directional and depend on growth.
Q14. Nastic movement in plants is:
a) Directional
b) Non-directional ✅
c) Always towards light
d) Always towards gravity
Answer: b) Non-directional
Explanation: Nastic movements (e.g., touch response in Mimosa) are not dependent on stimulus direction.
Q15. Which part of the brain controls hunger and thirst?
a) Cerebellum
b) Hypothalamus ✅
c) Medulla
d) Cerebrum
Answer: b) Hypothalamus
Explanation: Hypothalamus regulates hunger, thirst, and body temperature.
Q16. The function of the optic nerve is:
a) Hearing
b) Vision ✅
c) Smell
d) Taste
Answer: b) Vision
Explanation: Optic nerve carries visual information from retina to brain.
Q17. Which endocrine gland is called the “master gland”?
a) Thyroid
b) Pituitary ✅
c) Adrenal
d) Pancreas
Answer: b) Pituitary
Explanation: Pituitary gland controls other endocrine glands and secretes growth hormone.
Q18. The hormone secreted by pancreas to regulate sugar level is:
a) Thyroxine
b) Insulin ✅
c) Adrenaline
d) Auxin
Answer: b) Insulin
Explanation: Insulin lowers blood glucose by promoting its uptake into cells.
Q19. The hormone responsible for “fight or flight” response is:
a) Thyroxine
b) Adrenaline ✅
c) Insulin
d) Cortisol
Answer: b) Adrenaline
Explanation: Adrenaline prepares the body for emergency situations.
Q20. The thyroid gland secretes:
a) Insulin
b) Thyroxine ✅
c) Adrenaline
d) Estrogen
Answer: b) Thyroxine
Explanation: Thyroxine regulates metabolism of carbohydrates, fats, and proteins.
Q21. Deficiency of iodine causes:
a) Diabetes
b) Goitre ✅
c) Cretinism
d) Anaemia
Answer: b) Goitre
Explanation: Iodine deficiency reduces thyroxine production, causing goitre.
Q22. Which hormone is essential for normal growth in children?
a) Growth hormone ✅
b) Thyroxine
c) Insulin
d) Adrenaline
Answer: a) Growth hormone
Explanation: Growth hormone secreted by pituitary regulates growth and development.
Q23. Which hormone regulates the female reproductive cycle?
a) Testosterone
b) Estrogen ✅
c) Insulin
d) Thyroxine
Answer: b) Estrogen
Explanation: Estrogen regulates menstrual cycle and secondary sexual characters in females.
Q24. Which hormone regulates male secondary sexual characters?
a) Estrogen
b) Testosterone ✅
c) Insulin
d) Thyroxine
Answer: b) Testosterone
Explanation: Testosterone from testes controls development of male reproductive organs and secondary characters.
Q25. Reflex action is:
a) Slow response
b) Quick, involuntary response ✅
c) Always conscious
d) Always voluntary
Answer: b) Quick, involuntary response
Explanation: Reflex actions are fast, automatic responses without brain involvement to protect the body.
Control and Coordination – MCQs (Part 2: Q26–Q50)
Q26. Which part of the brain controls voluntary actions?
a) Cerebrum ✅
b) Cerebellum
c) Medulla
d) Spinal cord
Answer: a) Cerebrum
Explanation: Cerebrum controls voluntary actions like walking, speaking, writing.
Q27. Which part of the nervous system controls reflex actions?
a) Brain
b) Spinal cord ✅
c) Medulla
d) Cerebellum
Answer: b) Spinal cord
Explanation: Reflex arcs are coordinated by spinal cord without involving the brain.
Q28. Which plant hormone promotes seed germination?
a) Auxin
b) Gibberellin ✅
c) Ethylene
d) Cytokinin
Answer: b) Gibberellin
Explanation: Gibberellins break seed dormancy and promote germination.
Q29. Which plant hormone inhibits growth?
a) Auxin
b) Gibberellin
c) Abscisic acid ✅
d) Cytokinin
Answer: c) Abscisic acid
Explanation: ABA inhibits growth, induces dormancy, and closes stomata.
Q30. Which movement in plants is growth-independent?
a) Phototropism
b) Geotropism
c) Hydrotropism
d) Nastic movement ✅
Answer: d) Nastic movement
Explanation: Nastic movements (e.g., Mimosa leaf folding) are not dependent on direction of stimulus.
Q31. Which part of the brain maintains balance during walking?
a) Cerebellum ✅
b) Cerebrum
c) Medulla
d) Hypothalamus
Answer: a) Cerebellum
Explanation: Cerebellum coordinates muscle activities and maintains body balance.
Q32. The functional and structural unit of the nervous system is:
a) Axon
b) Neuron ✅
c) Synapse
d) Brain
Answer: b) Neuron
Explanation: Neurons are nerve cells specialized to transmit impulses.
Q33. The hormone secreted by adrenal gland is:
a) Insulin
b) Adrenaline ✅
c) Thyroxine
d) Estrogen
Answer: b) Adrenaline
Explanation: Adrenaline prepares the body for emergency (“fight or flight”) situations.
Q34. Which gland controls the activity of other endocrine glands?
a) Thyroid
b) Pituitary ✅
c) Adrenal
d) Pancreas
Answer: b) Pituitary
Explanation: Pituitary is called the “master gland” as it regulates other glands.
Q35. The part of neuron that carries impulses towards the cell body is:
a) Axon
b) Dendrite ✅
c) Myelin
d) Synapse
Answer: b) Dendrite
Explanation: Dendrites receive impulses and transmit them to cell body.
Q36. Which part of the brain controls involuntary actions like breathing?
a) Cerebellum
b) Medulla oblongata ✅
c) Cerebrum
d) Pons
Answer: b) Medulla oblongata
Explanation: Medulla regulates involuntary functions such as heartbeat and respiration.
Q37. Which hormone is secreted by pancreas?
a) Insulin ✅
b) Thyroxine
c) Estrogen
d) Cortisol
Answer: a) Insulin
Explanation: Pancreas secretes insulin which regulates blood sugar levels.
Q38. The gap between two neurons is known as:
a) Axon
b) Synapse ✅
c) Myelin sheath
d) Dendron
Answer: b) Synapse
Explanation: Synapse is a junction where impulse passes using neurotransmitters.
Q39. Which organ is affected in goitre disease?
a) Pancreas
b) Thyroid gland ✅
c) Adrenal gland
d) Pituitary gland
Answer: b) Thyroid gland
Explanation: Iodine deficiency leads to swelling of thyroid gland (goitre).
Q40. Which hormone is called the “emergency hormone”?
a) Thyroxine
b) Adrenaline ✅
c) Insulin
d) Testosterone
Answer: b) Adrenaline
Explanation: Adrenaline increases heartbeat, breathing, and prepares body for emergencies.
Q41. Which part of the plant detects light stimulus?
a) Root
b) Stem tip ✅
c) Leaf
d) Flower
Answer: b) Stem tip
Explanation: Auxins accumulate on shady side of stem tip causing phototropism.
Q42. Which part of the brain helps us to think and reason?
a) Cerebrum ✅
b) Cerebellum
c) Medulla
d) Hypothalamus
Answer: a) Cerebrum
Explanation: Cerebrum controls intelligence, memory, learning, and reasoning.
Q43. Which part of the nervous system is damaged in paralysis?
a) Spinal cord or brain ✅
b) Kidneys
c) Pancreas
d) Lungs
Answer: a) Spinal cord or brain
Explanation: Damage to spinal cord or brain affects nerve coordination, leading to paralysis.
Q44. Which hormone regulates metabolism?
a) Thyroxine ✅
b) Insulin
c) Estrogen
d) Adrenaline
Answer: a) Thyroxine
Explanation: Thyroxine regulates metabolism of carbohydrates, fats, and proteins.
Q45. Which hormone regulates sugar level in blood?
a) Thyroxine
b) Insulin ✅
c) Adrenaline
d) Growth hormone
Answer: b) Insulin
Explanation: Insulin lowers blood glucose, maintaining balance in body.
Q46. Which plant hormone is used to delay ripening of fruits during transport?
a) Auxin
b) Cytokinin
c) Gibberellin
d) Abscisic acid ✅
Answer: d) Abscisic acid
Explanation: Abscisic acid delays ripening and maintains dormancy.
Q47. Which hormone is essential for normal growth in children?
a) Growth hormone ✅
b) Thyroxine
c) Insulin
d) Adrenaline
Answer: a) Growth hormone
Explanation: Growth hormone secreted by pituitary regulates normal body growth.
Q48. Which part of human brain is most developed?
a) Cerebrum ✅
b) Cerebellum
c) Medulla
d) Pons
Answer: a) Cerebrum
Explanation: Cerebrum is the most developed part, responsible for complex functions.
Q49. Which organ secretes thyroxine hormone?
a) Pituitary
b) Thyroid ✅
c) Adrenal
d) Pancreas
Answer: b) Thyroid
Explanation: Thyroid gland secretes thyroxine which regulates metabolism.
Q50. Which movement in plants occurs in response to water?
a) Phototropism
b) Geotropism
c) Hydrotropism ✅
d) Chemotropism
Answer: c) Hydrotropism
Explanation: Roots show hydrotropism by growing towards water sources.
Control and Coordination – MCQs (Part 3: Q51–Q75)
Q51. Which hormone stimulates the plant to grow towards light?
a) Cytokinin
b) Auxin ✅
c) Ethylene
d) Gibberellin
Answer: b) Auxin
Explanation: Auxins accumulate on the shaded side of the stem and promote elongation, causing phototropism.
Q52. Which hormone is known as the “stress hormone” in plants?
a) Cytokinin
b) Gibberellin
c) Abscisic acid ✅
d) Auxin
Answer: c) Abscisic acid
Explanation: Abscisic acid helps plants survive stress by closing stomata and inducing dormancy.
Q53. Which hormone is secreted by pancreas to increase blood sugar level?
a) Insulin
b) Glucagon ✅
c) Thyroxine
d) Adrenaline
Answer: b) Glucagon
Explanation: Glucagon raises blood sugar by breaking down glycogen into glucose in the liver.
Q54. Chemotropism is shown in plants during:
a) Seed germination
b) Growth of pollen tube towards ovule ✅
c) Root growth towards water
d) Shoot growth towards light
Answer: b) Growth of pollen tube towards ovule
Explanation: Pollen tube grows towards ovule due to chemical stimulus.
Q55. The master gland of human body is:
a) Adrenal gland
b) Thyroid gland
c) Pituitary gland ✅
d) Pancreas
Answer: c) Pituitary gland
Explanation: Pituitary controls the functioning of other endocrine glands.
Q56. Which part of brain connects it to spinal cord?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata ✅
d) Hypothalamus
Answer: c) Medulla oblongata
Explanation: Medulla oblongata connects brain to spinal cord and controls involuntary activities.
Q57. Which hormone regulates calcium levels in blood?
a) Insulin
b) Thyroxine
c) Parathyroid hormone ✅
d) Adrenaline
Answer: c) Parathyroid hormone
Explanation: Parathyroid hormone increases blood calcium by releasing calcium from bones.
Q58. Which plant hormone promotes abscission (falling of leaves and fruits)?
a) Auxin
b) Ethylene ✅
c) Cytokinin
d) Gibberellin
Answer: b) Ethylene
Explanation: Ethylene accelerates fruit ripening and abscission of leaves and fruits.
Q59. Which lobe of cerebrum is associated with vision?
a) Frontal
b) Parietal
c) Temporal
d) Occipital ✅
Answer: d) Occipital
Explanation: The occipital lobe processes visual information.
Q60. Which gland secretes melatonin?
a) Pituitary
b) Pineal gland ✅
c) Thyroid
d) Pancreas
Answer: b) Pineal gland
Explanation: Pineal gland regulates biological rhythms and sleep-wake cycle through melatonin.
Q61. Which part of the brain controls emotions like anger and fear?
a) Cerebellum
b) Hypothalamus ✅
c) Medulla
d) Pons
Answer: b) Hypothalamus
Explanation: Hypothalamus regulates emotions, body temperature, hunger, and thirst.
Q62. Which hormone is responsible for secondary sexual characters in males?
a) Estrogen
b) Progesterone
c) Testosterone ✅
d) Insulin
Answer: c) Testosterone
Explanation: Testosterone, secreted by testes, controls male reproductive features.
Q63. Which hormone regulates female menstrual cycle?
a) Estrogen and progesterone ✅
b) Thyroxine and adrenaline
c) Insulin and glucagon
d) Auxin and cytokinin
Answer: a) Estrogen and progesterone
Explanation: These hormones regulate menstrual cycle and pregnancy in females.
Q64. Which part of neuron receives impulses from previous neuron?
a) Axon
b) Dendrites ✅
c) Synapse
d) Node of Ranvier
Answer: b) Dendrites
Explanation: Dendrites are branch-like extensions that receive signals.
Q65. Movement of Mimosa pudica (touch-me-not plant) is an example of:
a) Phototropism
b) Nastic movement ✅
c) Geotropism
d) Chemotropism
Answer: b) Nastic movement
Explanation: It is a non-directional movement in response to touch stimulus.
Q66. Which lobe of cerebrum controls hearing and memory?
a) Temporal lobe ✅
b) Frontal lobe
c) Occipital lobe
d) Parietal lobe
Answer: a) Temporal lobe
Explanation: Temporal lobe processes auditory information and memory.
Q67. Which part of brain controls involuntary actions like heartbeat?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata ✅
d) Hypothalamus
Answer: c) Medulla oblongata
Explanation: Medulla controls involuntary actions like breathing, heartbeat, swallowing.
Q68. The chemical secreted at the synapse for transmission of impulse is:
a) Hormone
b) Neurotransmitter ✅
c) Enzyme
d) Protein
Answer: b) Neurotransmitter
Explanation: Neurotransmitters like acetylcholine transmit impulses across synapse.
Q69. Which endocrine gland is located on top of kidneys?
a) Pituitary
b) Adrenal gland ✅
c) Thyroid
d) Pancreas
Answer: b) Adrenal gland
Explanation: Adrenal glands sit on kidneys and secrete adrenaline, cortisol, etc.
Q70. Which disease is caused by insulin deficiency?
a) Goitre
b) Diabetes mellitus ✅
c) Cretinism
d) Dwarfism
Answer: b) Diabetes mellitus
Explanation: Lack of insulin causes high blood sugar levels, leading to diabetes.
Q71. Which part of the nervous system is involved in reflex action?
a) Brain only
b) Spinal cord ✅
c) Cerebellum
d) Medulla
Answer: b) Spinal cord
Explanation: Reflexes are controlled by spinal cord for quick responses.
Q72. Which hormone is called “flight or fight hormone”?
a) Adrenaline ✅
b) Thyroxine
c) Estrogen
d) Insulin
Answer: a) Adrenaline
Explanation: Adrenaline increases heartbeat, blood pressure, and prepares for emergencies.
Q73. Which of the following is NOT a tropic movement?
a) Phototropism
b) Geotropism
c) Nastic movement ✅
d) Hydrotropism
Answer: c) Nastic movement
Explanation: Tropic movements are directional growth; nastic movements are non-directional.
Q74. Which plant hormone is responsible for fruit ripening?
a) Auxin
b) Ethylene ✅
c) Cytokinin
d) Gibberellin
Answer: b) Ethylene
Explanation: Ethylene is a gaseous hormone that promotes ripening of fruits.
Q75. Which hormone regulates metabolism of proteins, fats, and carbohydrates?
a) Thyroxine ✅
b) Adrenaline
c) Estrogen
d) Insulin
Answer: a) Thyroxine
Explanation: Thyroxine regulates overall metabolic activities in the body.
Control and Coordination – MCQs (Part 4: Q76–Q100)
Q76. Which part of the brain controls body temperature?
a) Cerebrum
b) Hypothalamus ✅
c) Medulla
d) Cerebellum
Answer: b) Hypothalamus
Explanation: Hypothalamus regulates body temperature, hunger, thirst, and emotions.
Q77. The movement of roots towards gravity is known as:
a) Phototropism
b) Geotropism ✅
c) Hydrotropism
d) Chemotropism
Answer: b) Geotropism
Explanation: Roots grow downward due to gravity = positive geotropism.
Q78. Which hormone is secreted by pancreas to reduce blood sugar?
a) Insulin ✅
b) Glucagon
c) Thyroxine
d) Cortisol
Answer: a) Insulin
Explanation: Insulin lowers blood sugar by enhancing glucose uptake into cells.
Q79. Which part of brain is responsible for intelligence and memory?
a) Cerebellum
b) Cerebrum ✅
c) Medulla
d) Hypothalamus
Answer: b) Cerebrum
Explanation: Cerebrum manages higher functions like memory, intelligence, and reasoning.
Q80. The hormone secreted by thyroid gland is:
a) Adrenaline
b) Insulin
c) Thyroxine ✅
d) Estrogen
Answer: c) Thyroxine
Explanation: Thyroxine regulates metabolism and requires iodine for synthesis.
Q81. Which disease occurs due to deficiency of thyroxine?
a) Diabetes
b) Goitre ✅
c) Night blindness
d) Anaemia
Answer: b) Goitre
Explanation: Iodine deficiency causes less thyroxine secretion, leading to goitre.
Q82. Which part of plant shows positive phototropism?
a) Root
b) Stem ✅
c) Leaf
d) Flower
Answer: b) Stem
Explanation: Stems grow towards light, showing positive phototropism.
Q83. Which part of plant shows positive geotropism?
a) Leaf
b) Stem
c) Root ✅
d) Flower
Answer: c) Root
Explanation: Roots grow towards gravity, showing positive geotropism.
Q84. The junction between two neurons is called:
a) Axon
b) Synapse ✅
c) Dendron
d) Medulla
Answer: b) Synapse
Explanation: Synapse allows transmission of impulses via neurotransmitters.
Q85. Which gland secretes adrenaline?
a) Pancreas
b) Adrenal gland ✅
c) Pituitary
d) Thyroid
Answer: b) Adrenal gland
Explanation: Adrenal glands secrete adrenaline to handle stress.
Q86. The coordination in animals is achieved by:
a) Hormones only
b) Nervous system only
c) Nervous and endocrine systems ✅
d) Circulatory system
Answer: c) Nervous and endocrine systems
Explanation: Both systems together regulate coordination in animals.
Q87. Tropic movements in plants are controlled by:
a) Light only
b) Gravity only
c) Stimuli and plant hormones ✅
d) Photosynthesis
Answer: c) Stimuli and plant hormones
Explanation: Tropic movements occur due to external stimuli regulated by hormones.
Q88. Which part of neuron carries impulses away from cell body?
a) Dendrite
b) Axon ✅
c) Synapse
d) Nucleus
Answer: b) Axon
Explanation: Axons transmit impulses away from cell body towards synapse.
Q89. Reflex action is controlled by:
a) Brain
b) Spinal cord ✅
c) Cerebrum
d) Medulla
Answer: b) Spinal cord
Explanation: Reflexes are quick, automatic responses mediated by spinal cord.
Q90. Which hormone prepares body for emergency situations?
a) Thyroxine
b) Adrenaline ✅
c) Insulin
d) Estrogen
Answer: b) Adrenaline
Explanation: Adrenaline increases heartbeat, breathing, and blood supply to muscles.
Q91. Which lobe of cerebrum is associated with thinking and reasoning?
a) Frontal lobe ✅
b) Parietal lobe
c) Occipital lobe
d) Temporal lobe
Answer: a) Frontal lobe
Explanation: Frontal lobe regulates decision making, reasoning, and personality.
Q92. Which plant hormone promotes apical dominance?
a) Auxin ✅
b) Cytokinin
c) Gibberellin
d) Ethylene
Answer: a) Auxin
Explanation: Auxins inhibit growth of lateral buds, maintaining apical dominance.
Q93. Which hormone is secreted by testes?
a) Estrogen
b) Progesterone
c) Testosterone ✅
d) Insulin
Answer: c) Testosterone
Explanation: Testosterone controls male reproductive functions and secondary characters.
Q94. Which hormone is secreted by ovaries?
a) Testosterone
b) Estrogen ✅
c) Thyroxine
d) Insulin
Answer: b) Estrogen
Explanation: Estrogen regulates menstrual cycle and female secondary sexual characters.
Q95. Which part of the nervous system carries impulses from receptors to CNS?
a) Sensory neurons ✅
b) Motor neurons
c) Relay neurons
d) Axon
Answer: a) Sensory neurons
Explanation: Sensory neurons carry signals from sense organs to CNS.
Q96. Which part of the nervous system carries impulses from CNS to effectors?
a) Sensory neurons
b) Motor neurons ✅
c) Dendrites
d) Relay neurons
Answer: b) Motor neurons
Explanation: Motor neurons carry instructions from CNS to muscles/glands.
Q97. Which organ is affected in diabetes mellitus?
a) Kidney
b) Pancreas ✅
c) Thyroid
d) Liver
Answer: b) Pancreas
Explanation: In diabetes, pancreas fails to produce sufficient insulin.
Q98. Which hormone regulates water balance in body?
a) ADH (Antidiuretic hormone) ✅
b) Insulin
c) Thyroxine
d) Adrenaline
Answer: a) ADH (Antidiuretic hormone)
Explanation: ADH from pituitary regulates water reabsorption in kidneys.
Q99. Which plant hormone is responsible for breaking seed dormancy?
a) Auxin
b) Gibberellin ✅
c) Ethylene
d) Abscisic acid
Answer: b) Gibberellin
Explanation: Gibberellins promote germination by breaking seed dormancy.
Q100. Which type of movement in plants is growth-independent?
a) Tropic movement
b) Nastic movement ✅
c) Phototropism
d) Geotropism
Answer: b) Nastic movement
Explanation: Nastic movements like folding of leaves in Mimosa are independent of stimulus direction.
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❓ FAQ Section
Q1. Why are Control and Coordination MCQs important for Class 10 students?
They help students revise key concepts of the nervous system, brain, and plant hormones, which are important for CBSE Class 10 exams.
Q2. How many MCQs should I practice from this chapter for board exams?
Practicing 80–100 MCQs with solutions ensures strong preparation and quick revision before exams.
Q3. What type of questions are asked from the Control and Coordination chapter?
Questions are usually on the structure of the nervous system, reflex action, plant hormones, brain functions, and coordination in animals.
Q4. Can these MCQs help in exams like NTSE or Olympiads?
Yes, these MCQs are useful not only for CBSE boards but also for NTSE, Olympiads, and other competitive school-level exams.
Q5. Do these MCQs cover both plants and animals?
Yes, the MCQs include coordination in animals (nervous and endocrine systems) and coordination in plants (hormones and tropic movements).
