Question

Assertion (A): The protective membranous covering of the brain and spinal cord are the same, whereas the bony coverings of these are cranium and vertebral column respectively. 

Reason (R): Since both are very delicate and sensitive organs of our body, they are protected by a three-layered membrane known as meninges.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Options

• (1)

• (2)

• (3)

• (4)

Answer 1

(3)

Explanation:

Both the brain and spinal cord are protected by the same membranous covering called the meninges. Their bony coverings differ: the cranium protects the brain, while the vertebral column protects the spinal cord. Therefore, the Assertion (A) is true.

The brain and spinal cord are delicate and sensitive organs, so both are protected by a three-layered membrane called the meninges. Therefore, the Reason (R) is also true.

Hence, both A and R are true.