Paper 1 · People, Development and Environment
UGC NET December 2022 (28.02.2023) Shift-II
Given below are two statements. Statement I: Allergens are substances that activate the immune system. Statement II: The concentration of allergens in an indoor environment can be a thousand times higher than in the air outside. In the light of the above statements, choose the most appropriate answer from the options given below.
- Statement I: Allergens are substances that activate the immune system.
- Statement II: The concentration of allergens in an indoor environment can be a thousand times higher than in the air outside.
ABoth Statement I and Statement II are true ✓ Correct
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false
DStatement I is false but Statement II is true
Correct answer: (A) Both Statement I and Statement II are true — Both statements are true, so the answer is that both Statement I and Statement II are true.
Explanation
★Both statements are true, so the answer is that both Statement I and Statement II are true.
★Allergens are substances the immune system reacts to as foreign or dangerous.
★The immune system responds by producing antibodies, so allergens activate it, making statement I true.
★Indoor air can trap allergens from dust, pets and mould.
★So their concentration indoors can be far higher than in the outside air.
★So statement II about the higher indoor concentration is also true.
★Therefore both statements are true.
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