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Human Health and Disease — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease4 Marks
Question
Use this key for Questions A-D Key:
  1. thymus gland.
  2. spleen.
  3. lymph node.
  4. red bone marrow.
  1. Causes differentiation of T-cells.
  2. Purifies lymph.
  3. Contains red pulp and white pulp.
  4. Formation of granular and a granular leukocytes.
✓

Answer

(A) Causes differentiation of T-cells. (i) thymus gland.
(B) Purifies lymph. (iii) lymph node.
(C) Contains red pulp and white pulp. (ii) spleen.
(D) Formation of granular and a granular leukocytes. (iv) red bone marrow.

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