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[A] : Lymphocytes arise from bone marro...

[A] : Lymphocytes arise from bone marrow and present in the blood, lymph and connec- tive tissues.
[R]: Lymphocytes migrate to thymus. where they develop into T cells and begin to mature.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
A
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[A]: Lymphocytes develop in lymphoid tissue and involved in cell mediated and humeral immunity. [R]: Lymphocytes are produced in primary lymphoid tissue (thymus, embryonic liver and adult bone narrow) and migrate to secondary lymphoid tissue (spleen and lymphnodes)

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