NCERT Class 10 Chapter 6 Control and Coordination CBSE Board Sample Problems Multiple Choice Question

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Question

Which of the following Statements are true?

(i) Sudden action in response to something in the environment is called reflex

(ii) Sensory neurons carry signals from spinal cord to muscle.

(iii) Motor neurons carry signals from receptors to spinal cord.

(iv) The path through which signals are transmitted from a receptor to muscle or a gland is called reflex arc.

1. (i) and (ii)

2. (i) and (iii)

3. (i) and (iv)

4. (i) (ii) and (iii)

Question

In a synapse, chemical signal is transmitted from

1. Dendritic end of one neuron to axonal end of another neuron

2. Axon to cell body of the same neuron

3. Cell body to axonal end of the same neuron

4. Axonal end of one neuron to dendritic end of another neuron

Question

Which of the following statements is correct about receptors?

1. Gustatory receptors detect taste while olfactory receptors detect smell

2. Both gustatory and olfactory receptors detect smell

3. Auditory receptors detect smell and olfactory receptors detect taste

4. Olfactory receptors detect taste and gustatory receptors smell

Question

Posture and balance of the body ¡s controlled by

1. Cerebrum

2. Cerebellum

3. Medulla

4. Pons

Question

Dramatic changes of body features associated with puberty are mainly because of the secretion of _____.

1. Oestrogen from testes and testosterone from ovary.

2. Oestrogen from adrenal gland and testosterone from pituitary gland.

3. Testosterone from testes and oestrogen from ovary.

4. Testosterone from thyroid gland and oestrogen from pituitary gland.

Question

In a synapse, chemical signal is transmitted from _________

1. Dendrite end of one neuron to axonal end of another neuron.

2. Axon to cell body of the same neuron.

3. Cell body to axonal end of the same neuron.

4. Axonal end of one neuron to dendrite end of another neuron.

Question

Assertion (A): The timing and amount of hormone released is regulated by feedback mechanisms.

Reason (R): Over secretion and under secretion of hormones is harmful for the body.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true but R ¡s not the correct explanation of A.

3. A is true but R ¡s false.

4. A is false but R is true.

Question

Assertion (A): Blinking of eyes when a foreign particle gets in them is a reflex action.

Reason (R): It is a spontaneous and voluntary response to a stimulus.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true but R is not the correct explanation of A.

3. A is true but R is false.

4. A is false but R is true.

Question

The changes associated with puberty are because of the secretions secreted by

1. Pancreas

2. Adrenal gland

3. Thyroid gland

4. Gonads

Question

Which of the following endocrine glands ¡s unpaired?

1. Adrenal

2. Testis

3. Pituitary

4. Ovary