Paper 1 · People, Development and Environment
UGC NET December 2023 (19.12.2023) Shift-II
Depletion of stratospheric ozone results in which of the following? Choose the correct answer from the options given below.
- 1. Increase in the ultraviolet radiation
- 2. Increase in infra-red radiation
- 3. Increase in skin cancer
- 4. Significant impact on terrestrial flora and fauna
- 5. Decrease in cataract cases
A1, 2, 3 and 4 only
B1, 3 and 4 only ✓ Correct
C2, 3, 4 and 5 only
D1, 2 and 3 only
Correct answer: (B) 1, 3 and 4 only — Ozone depletion increases ultraviolet radiation, skin cancer and harm to flora and fauna, so the answer is 1, 3 and 4.
Explanation
★Ozone depletion increases ultraviolet radiation, skin cancer and harm to flora and fauna, so the answer is 1, 3 and 4.
★The stratospheric ozone layer absorbs most harmful ultraviolet radiation.
★When it thins, more ultraviolet radiation reaches the earth's surface.
★Higher ultraviolet exposure raises rates of skin cancer and eye cataract.
★It also damages plants, crops and marine life across ecosystems.
★Cataract cases rise rather than fall, and infra red radiation is unrelated to ozone loss.
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