Lesson eLearning

Which of the following is the primary lymphoid organ where B‑lymphocytes mature?

easy MCQ 1 mark Class 12 · Biology · Human Health and Disease
  1. Thymus
  2. Bone marrow
  3. Spleen
  4. Lymph nodes
Answer
Bone marrow

The correct answer is Bone marrow — Hence the correct choice is Bone marrow.

Step-by-step solution

  1. Identify the organs listed in the options.
  2. Recall that B‑lymphocytes develop in the primary lymphoid organ where they acquire antigen‑independent receptors.
  3. Bone marrow is the site of B‑cell maturation, whereas the thymus is for T‑cells.
  4. Hence the correct choice is Bone marrow.
Common mistake: Choosing thymus instead of bone marrow

Concept tested: Primary lymphoid organ for B cells

Published · How this solution was prepared and checked

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