Fundamentholfundamenthol
NEET2025Biology
Q.

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like

A. thymus

B. bone marrow

C. spleen

D. lymph nodes

E. Peyer's patches

Choose the correct answer from the opticns given below

  1. A

    C, D, E only

  2. B

    B, C, D only

  3. C

    A, B, C only

  4. D

    E, A, B only

Solution

Primary lymphoid organs: bone marrow and thymus — where immature lymphocytes mature into antigen-sensitive cells.

Secondary lymphoid organs: spleen, lymph nodes, Peyer's patches (of small intestine), tonsils and appendix — these are the sites where mature lymphocytes encounter antigens.

C, D and E only.

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