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Question

Dark reaction of photosynthesis is a cyclic process as .......... is regenerated.

A
RuBP
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B
CO2
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C
Glucose
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D
PGA
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Solution

The correct option is A RuBP
  • Dark reaction starts with the condensation of CO2 and RuBP to form an unstable six-carbon compound which is split into two molecules of three carbon PGA.
  • During the regeneration phase of the cycle, RuBP is regenerated to enter into the pathway again, making it a cyclic process.
    Hence, the correct answer is A.

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