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Assertion :The thymus gland is quite large in size at the time of birth but shrinks in size with age. Reason: Immune system produces most of its T cells during childhood and requires very few new T cells after puberty.
Assertion :The thymus gland is quite large in size at the time of birth but shrinks in size with age. Reason: Immune system produces most of its T cells during childhood and requires very few new T cells after puberty.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The thymus gland is quite large in size at the time of birth but shrinks in size with age. This happens immune system produces most of its T cells during childhood and requires very few new T cells after puberty. The T cells, however, remain suspended in blood and lymph at various regions and act against foreign antigens when it encounters it.So, the correct option is 'Both assertion and reason are correct and reason is the correct explanation for assertion'.
The thymus gland is quite large in size at the time of birth but shrinks in size with age. This happens immune system produces most of its T cells during childhood and requires very few new T cells after puberty. The T cells, however, remain suspended in blood and lymph at various regions and act against foreign antigens when it encounters it.
So, the correct option is 'Both assertion and reason are correct and reason is the correct explanation for assertion'.
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