Dark Reactions: Calvin Cycle and C3 Pathway · NCERT Biology

Which of these is NOT a direct product of the Calvin cycle?

  1. Triose phosphate (G3P)
  2. ADP molecule
  3. NADP+ coenzyme
  4. Oxygen gas
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Correct answer: Oxygen gas

Oxygen is a byproduct of the light-dependent reactions (photolysis of water) in the thylakoid. The Calvin cycle produces triose phosphate, and regenerates ADP and NADP+ to be reused by light reactions.

Difficulty: Medium Question 18 of 20

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