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KCET · BIOLOGY · STD 11 - 11. Photosynthesis in Higher Plants

Identify the incorrect statement with respect to Calvin cycle.

  1. A 18 molecules of ATP are synthesised during carbon fixation.
  2. B \(NADPH + H ^{+}\)produced in light reaction is used to reduce diphosphoglycerate.
  3. C The carboxylation of RuBP is catalysed by RuBisCO.
  4. D The first stable intermediate compound formed is phosphoglycerate.
Verified Solution

Answer & Solution

Correct Answer

(A) 18 molecules of ATP are synthesised during carbon fixation.

Step-by-step Solution

Detailed explanation

(A) 18 molecules of ATP are synthesised during carbon fixation.,
In the Calvin cycle, 18 molecules of ATP are not synthesized during carbon fixation. Instead, 19 ATP molecules are used in the entire Calvin cycle to produce one molecule of glucose. The correct process involves the synthesis of ATP and NADPH during the light-dependent reaction of photosynthesis, which are then utilized in the Calvin cycle for carbon fixation and subsequent stages.