CBSE 2025 · Region 6 · Set 3 · Q13 · 1 mark
Assertion (A): An antibody is a protein molecule made by the lymphocytes.
Reason (R) : An antibody binds to a specific foreign antigen and neutralizes its odd effects.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Human Health and DiseaseImmunityUnderstandassertion_reasoneasy
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CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.