Which of the following statements is true?
(i) Sudden action in response to something in the environment is called reflex action
(ii) Sensory neurons carry signals from spinal cord to muscles
(iii) Motor neurons carry signals from receptors to the spinal cord
(iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc
(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (i), (ii) and (iii)
Explanation:
The statements (ii) and (iii) are false because sensory neurons carry signals from receptors to the spinal cord and motor neurons carry signals from the spinal cord to the muscles. Therefore, the statement (i) and (iv) are true. Hence, (c) is the correct option.