Paper 1 · People, Development and Environment
UGC NET June 2024 Re-Exam (29.08.2024) Shift-II
The presence of lead in drinking water can adversely affect human health. Which three systems of the human body are most sensitive to lead? Choose the correct answer from the options given below.
- 1. Nervous system
- 2. Cardiovascular system
- 3. Renal system
- 4. Respiratory system
- 5. Hematopoietic system
A1, 3, 5 only ✓ Correct
B2, 3, 4 only
C2, 4, 5 only
D1, 3, 4 only
Correct answer: (A) 1, 3, 5 only — Lead most affects the nervous, renal and hematopoietic systems, so the answer is 1, 3 and 5.
Explanation
★Lead most affects the nervous, renal and hematopoietic systems, so the answer is 1, 3 and 5.
★Lead damages the brain and nervous system.
★It impairs kidney function in the renal system.
★It disrupts haemoglobin production, affecting blood formation.
★The cardiovascular and respiratory systems are not the three most sensitive here.
★Hence 1, 3 and 5 is correct.
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