NEET UG 2025 · Zoology · Question 156
NEET 2025 Zoology, question 156
Question 156 of the NEET 2025 paper (code 45) is a Zoology question from Human Health and Disease. Its idea, Primary and Secondary Lymphoid Organs, was asked 3 times, in 2024, 2025 and 2026, across NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q156 · Zoology
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 options given below:
- 1B, C, D only
- 2A, B, C only
- 3E, A, B only
- 4C, D, E onlyOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
Primary and Secondary Lymphoid Organs, in other papers
NEET asked this idea 3 times, in 2024, 2025 and 2026. The other 2 questions below.
- 2026 Q165Which of the following are secondary lymphoid organs ? (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus Choose the correct answer from…Other · Medium
- 2024 Q200Given below are two statements: Statement I: Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are…Two statements · Medium
Primary and Secondary Lymphoid Organs: every question and how it was framed
The chapter
Human Health and Disease in ten years of NEET
33 questions from 2017–2026, asked in 10 of 10 papers, about 3.2 a paper. Immunity and Lymphoid Organs alone had 17.