Human Health and Diseases MCQs for NEET — Zoology Questions with Answers

Practice free Human Health and Diseases (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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NEET 2025

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After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organs/tissue(s) like: A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer's patches Choose the correct answer:

A. B, C, D only B. A, B, C only C. E, A, B only D. C, D, E only

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Explanation

Spleen (C), lymph nodes (D) and Peyer's patches (E) are secondary lymphoid organs. Thymus and bone marrow are primary lymphoid organs.

NEET 2025

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Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

A. Acquired Immunity B. Innate Immunity C. Cell-mediated Immunity D. Humoral Immunity

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Explanation

Innate immunity is present from birth and provides non-specific defence (barriers, phagocytes, etc.).

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