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NEET 2024, Biology Q9: Dark Reactions and Photorespiration

NEET2024Biology
Q.

Which of the following are required for the dark reaction of photosynthesis?

A. Light    B. Chlorophyll    C. CO    D. ATP    E. NADPH

  1. A

    C, D and E only

  2. B

    D and E only

  3. C

    A, B and C only

  4. D

    B, C and D only

Solution

The dark reaction (Calvin cycle / biosynthetic phase) uses CO as the carbon source and ATP and NADPH (produced by the light reaction) as energy and reducing power. Light and chlorophyll are required for the light reaction, not for the dark reaction. Hence C, D and E.

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