Read the assertion and reson carefully to mark the correct option out of the options given below:
Assertion : Some areas of the brain and spinal cord look white
Reason : This is because cell bodies of neurons are situated in those areas.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and the reason are true but the reason is a not correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

C

Explanation

The brain and the spinal cord constitute the central nervous system. The areas of the CNS where the cell boides of the neurons are situated. Look grey and contitute the white matter of the CNS. The white matter contains only nerve fibres crusing from or to the nerve cells in the grey matter. it looks white due to the presence of myelin around the myelinated fibres. In presence of myelin arouung the myelinated fibres. In must parts of the brain, the grey matter containing the nerve cells is situated on the surface while the white mattermade of fibres is located deep inside the brain, but in the spinal cord. the grey matter is internal and white matter occurs outside.