AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(B) Both A and R are true but R is not the correct explanation of A.
Assertion A is true — conservation preserves ecological diversity and life support systems. Reason R is also true — conservation preserves genetic diversity for better growth and breeding. However, R states an additional benefit of conservation, not the explanation for why ecological diversity and life support systems must be maintained.
The passage states both points together: conservation "preserves the ecological diversity and our life support systems" AND "also preserves the genetic diversity of plants and animals for better growth of species and breeding." Since R gives a separate/parallel reason rather than explaining why A is true, the answer is (B). Students often confuse (A) and (B); here, R is a complementary benefit, not a causal explanation.