Assertion :Antigen can be easily recognized because it has antigenic determinants. Reason: The recognition ability is innate.

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 C Assertion is correct but Reason is incorrect.
An epitope, also known as antigenic determinant, is the part of an antigen that is recognized by the immune system, specifically by antibodies, B cells, or T cells. In other words, the epitope is the specific piece of the antigen to which an antibody binds. Human body is able to recognize the antigens but against the specific antigens, antibodies are produced or modified according to the epitopes present on the antigen, so as to clear it from the system. Hence, the ability to recognize the antigen is not innate.
Therefore, the correct answer is option C.

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