Assertion :
Spinal cord has a column of both grey and white matter
Reason:
Grey matter forms the central spinal canal.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The spinal cord extends downwards from the brain stem. The grey matter from a column running along the central part of the spinal cord (= neurocoel, lined with ciliated ependymal, epithelium). containing the cerebrospinal fluid, running along the central part of the grey matter. Grey matter is composed of nerve cells, bodies, dendrites and synapses. The white matter forms an outer column surrounding the grey matter at its centre.
So the correct option is 'B'.

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