NEET Zoology Immunity MCQ Question
Which combination of statements correctly describes aspects of immunity?
Active immunity is slow but provides a long-lasting response; allergies are caused by exaggerated immune responses to allergens.
Passive immunity is immediate but not long-lasting; cytokines are solely responsible for allergic reactions.
Allergens are only infectious agents; memory response is absent in acquired immunity.
Graft rejection does not require tissue matching; antibodies produced during allergies are of IgM type.
Correct Answer
Detailed Explanation
Active immunity is indeed slow and offers lasting protection, while allergies arise from the immune system's exaggerated response to allergens, as described in the context. The other options contain inaccuracies about immunity mechanisms.
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