Question

Match the cell types listed in Column I with their sources in Column II and the primary functional roles listed in Column III.

• A. P-(iii)-b, Q-(iv)-c, R-(ii)-a, S-(i)-d
• B. P-(ii)-c, Q-(iv)-d, R-(i)-a, S-(iii)-b
• C. P-(i)-a, Q-(iv)-b, R-(ii)-c, S-(iii)-d
• D. P-(iii)-c, Q-(iv)-b, R-(ii)-a, S-(i)-d

Hint:

Microglial cells are specialized macrophages in the brain, and pneumocytes are involved in gas exchange in the lungs.

Answer 1

The Correct Option is D

Step 1: Understanding the question.
The question asks to match the cell types listed in Column I with their sources in Column II and their primary functional roles in Column III.
Step 2: Analyzing the options.
- (P) Microglial cells: These cells are part of the brain (iii) and their primary function is phagocytosis (c).
- (Q) Leydig cells: These cells are found in the testes (iv) and are responsible for hormone secretion (b).
- (R) ON cells: These cells are found in the eyes (ii) and their primary function is visual transduction (a).
- (S) Pneumocytes: These cells are located in the lungs (i) and their primary function is gaseous exchange (d).
Step 3: Conclusion.
Thus, the correct matching is: P-(iii)-c, Q-(iv)-b, R-(ii)-a, S-(i)-d, which corresponds to option (D).