Which of the following is the primary product of the light-dependent reactions of photosynthesis? MCQ with Answer and Explanation

Which of the following is the primary product of the light-dependent reactions of photosynthesis?
A. Water
B. ATP and NADPH
C. Oxygen only
D. Glucose
Answer: Option B
Solution (By JKExamLibrary)
Light reactions occur in the thylakoid membranes, converting light energy into chemical energy in the form of ATP and NADPH, with oxygen as a by-product. These energy-rich molecules are used in the Calvin cycle (light-independent reactions) to fix CO₂ into carbohydrates. Glucose is a final product of the Calvin cycle. Oxygen is released but not the primary product. Thus ATP and NADPH are the main outputs.

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Correct Answer: Option C


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Correct Answer: Option C


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