Important MCQs for Class 10 Science Chapter 6 Control and Coordination - Download Free PDF

Class 10th Science chapter Control and coordination MCQs Free PDF download. The Control and Coordination chapter of class 10th is an important chapter that deals plant and animal body growth and development. The Control and coordination is very important for Board examination. Students should prepare comprehensively for Science Board Examination. The control coordination provide various topics for instance plant hormone, animal hormone, growth and development.

The control and coordination also provide various diagrams like Brain, spinal cord, reflex action, neuron and nervous system in human body. The Control and Coordination MCQs important questions for board examination. One can follow these Science MCQs to score good marks in board examination.

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1. Which part of the human brain is responsible for maintaining posture and balance?

A) Medulla oblongata

b) Cerebrum

c) Cerebellum

d) Hypothalamus

Answer: c) Cerebellum

2. Which of the following statements about reflex actions is incorrect?

A) Reflex actions are controlled by the spinal cord.

b) Reflex actions are voluntary actions.

c) Reflex actions occur without conscious thought.

d) Reflex actions help protect the body from harm.

Answer: b) Reflex actions are voluntary actions.

3. Which plant hormone is responsible for the closing of stomata during water stress?

A) Auxin

b) Cytokinin

c) Abscisic acid

d) Gibberellin

Answer: c) Abscisic acid

4. The part of a neuron that carries impulses away from the cell body is called:

A) Dendrite

b) Axon

c) Synapse

d) Myelin sheath

Answer: b) Axon

5. The movement of a plant root toward water is called:

a) Geotropism

b) Hydrotropism

c) Phototropism

d) Thigmotropism

Answer: b) Hydrotropism

6. Which of the following is NOT a function of the hypothalamus?

a) Regulating body temperature

b) Controlling hunger and thirst

c) Coordinating voluntary movements

d) Controlling the pituitary gland

Answer: c) Coordinating voluntary movements (This is controlled by the cerebellum.)

7. The gap between two neurons is called:

a) Synapse

b) Axon terminal

c) Dendrite

d) Myelin sheath

Answer: a) Synapse

8. Which part of the brain controls involuntary actions like heartbeat and breathing?

A) Cerebrum

b) Cerebellum

c) Medulla oblongata

d) Pons

Answer: c) Medulla oblongata

9. The bending of a plant stem towards light is due to the movement of which hormone?

A) Gibberellins

b) Auxins

c) Cytokinins

d) Abscisic acid

Answer: b) Auxins

10. Which of the following statements about the nervous system is true?

A) The spinal cord is not involved in reflex actions.

b) Hormones transmit impulses faster than neurons.

c) The peripheral nervous system includes the brain.

d) The autonomic nervous system controls involuntary actions.

Answer: d) The autonomic nervous system controls involuntary actions

11. Which of the following is a function of the parasympathetic nervous system?

A) Increases heart rate

b) Dilates pupils

c) Slows down digestion

d) Lowers blood pressure

Answer: d) Lowers blood pressure

12. What is the function of the myelin sheath in a neuron?

a) To slow down nerve impulses

b) To protect the neuron from infections

c) To insulate the axon and speed up impulse transmission

d) To store neurotransmitters

Answer: c) To insulate the axon and speed up impulse transmission

13. Which endocrine gland is often called the “master gland”?

A) Thyroid gland

b) Pituitary gland

c) Adrenal gland

d) Pancreas

Answer: b) Pituitary gland

14. What will happen if the cerebellum of a person is damaged?

A) Loss of memory

b) Loss of sense of smell

c) Difficulty in maintaining balance and coordination

d) Loss of speech ability

Answer: c) Difficulty in maintaining balance and coordination

15. In plants, which hormone promotes seed dormancy?

a) Auxin

b) Cytokinin

c) Gibberellin

d) Abscisic acid

Answer: d) Abscisic acid

16. What is the function of the corpus callosum in the brain?

a) Transmitting signals between the brain and spinal cord

b) Connecting the two hemispheres of the brain

c) Controlling involuntary functions

d) Regulating hormone release

Answer: b) Connecting the two hemispheres of the brain

17. Which hormone regulates the metabolism of carbohydrates, proteins, and fats in the body?

A) Thyroxine

b) Insulin

c) Estrogen

d) Adrenaline

Answer: a) Thyroxine

18. In which part of the brain is the “hunger center” located?

A) Cerebrum

b) Hypothalamus

c) Medulla oblongata

d) Cerebellum

Answer: b) Hypothalamus

19. In a reflex arc, which of the following acts as the relay center?

a) Brain

b) Sensory neuron

c) Spinal cord

d) Motor neuron

Answer: c) Spinal cord

20. Which hormone is released in response to stress and prepares the body for “fight or flight”?

A) Oxytocin

b) Insulin

c) Adrenaline

d) Glucagon

Answer: c) Adrenaline

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