Question

The following question consist of two statement -Asseration(A) and Reason(R) answer these question selecting the appropriate option given below
(a) Both A and R are true and R is correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

1. Asseration(A): A nerve impulse is an electrochemical event.
Reason(R): in a nerve impulse there are change in the resting potential which spreads down the nerve fibers.

2.Asseration(A): the brain is also known as the central nervous system.
Reason(R): Central nervous system control and regulates the voluntary actions.​

Answer 1

1. Answer will be (a) Both A and R are true and R is correct explanation of A.

2. Answer will be (d) A is false but R is true.

⇒ The proper reason why assertion is false is the nervous system is of two parts CNS (central nervous system) and PNS (peripheral nervous system) CNS is consist of brain and spinal cord.

According to assertion given, Brain is also known as CNS which is wrong so the assertion is false and the answer will be (d) A is false but R is true.

Answer 2

Answer:

1) (a) Both A and R are true and R is correct explanation of A.

2) (d) A is false but R is true.