RRB NTPC · Question 10
An assertion (A) and a reason (R) are given below. Assertion (A): Plants convert light energy into chemical energy during the process of photosynthesis. Reason (R): Sugar produced from photosynthesis by plants is used by human beings as a source of energy. Choose the correct option A. Both A and R are true and R is the correct explanation of A B. Both A and R are true but R is not the correct explanation of A C. A is true but R is false D. A is false, but R is true
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Answer: (B) B
Explanation
The assertion is true: in photosynthesis plants capture light energy and store it as chemical energy in glucose. The reason is also true: humans obtain energy from sugars made by plants. But the reason does not explain why plants convert light into chemical energy; it describes how humans use the product. So both are true, but R is not the correct explanation of A.