Topic: C3 and C4 pathways, photorespiration· Plant Physiology

Which of the following are required for the dark reaction of photosynthesis?A. LightB. ChlorophyllC. CO_2D. ATPE. NADPHChoose the correct answer from the options given below:

1. D and E only

2. A, B and C only

3. B, C and D only

4. C, D and E only

Doubtly Asked 30 Oct 2026 NEET UG 2024 Practice test neet Save WhatsApp Report

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Answer: 4. C, D and E only

Key idea: the dark (biosynthetic) reaction uses the ATP and NADPH made in the light reaction, together with \(CO_2\).

\(CO_2\) (C), ATP (D) and NADPH (E) are directly required. Light and chlorophyll are needed only for the light reaction; the Calvin cycle does not use them directly.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of the following are required for the dark reaction of photosynthesis?A. LightB. ChlorophyllC. CO_2D. ATPE. NADPHChoose the correct answer from the options given below:

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