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Which of the following is true of photosynthesis?

  • (a) No ATP is formed. Your answer
  • (b) The O2 evolved comes from CO2. Your answer
  • (c) Water is only a medium and does not take part. Your answer
  • (d) ATP is formed. Correct
Your answer: Correct answer: (d)
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Explanation

Why (d) is correct

ATP is formed in photosynthesis, by photophosphorylation in the light reaction.

Why the other options are wrong

  • (a) · your answer ATP is formed in both cyclic and non-cyclic photophosphorylation.
  • (b) · your answer The O2 evolved comes from water, not CO2.
  • (c) · your answer Water is a raw material: it is split to give electrons and O2.
NCERT point: ATP and NADPH from the light reaction drive the Calvin cycle.
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