Given below are two statements: one is labelled Assertion(A) and other is labelled Reason(R).
Assertion (A): Unmyelinated nerve fibres in PNS are devoid of myelin sheath.
Reason (R): The axon of such neurons is not enclosed by Schwann cells.
In light of above statements, choose the correct answer from the options given below.

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Both (A) and (R) are correct and (R) is the correct explanation of (A)

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(A) is correct but (R) is not correct

Both (A) and (R) are incorrect

answer is C.

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Detailed Solution

Unmyelinated nerve fibres of PNS are without the myelin sheath. These fibres are enclosed by a Schwann cells which do not form a myelin sheath around the axon. There are two types of Schwann cells - Myelinating and non-myelinating.

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Best Online Course for CBSE