NEET Botany Light Reaction MCQ Question
Which of the following statements about the light reaction of photosynthesis is correct?
Electrons are transferred from PS II to PS I through an electron transport chain.
ATP is synthesized directly from the absorption of light energy without a proton gradient.
NADP+ is reduced to NADPH in the chloroplast stroma only during the dark reactions.
The breakdown of chlorophyll occurs primarily during the light reactions, decreasing photosynthesis efficiency.
Correct Answer
Detailed Explanation
Electrons are indeed transferred from PS II to PS I through an electron transport chain, as indicated in the context. Option B is incorrect as ATP synthesis requires a proton gradient, Option C misstates the timing of NADP+ reduction, and Option D relates to chlorophyll breakdown, which negatively affects photosynthesis efficiency but is not a primary function of light reactions.
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