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Question

Assimilatory power refers to the
  1. Reduction of CO2
  2. Splitting of water
  3. Generation of ATP and NADPH2
  4. Disintegration of plastids

A
Splitting of water
B
Reduction of CO2
C
Disintegration of plastids
D
Generation of ATP and NADPH2
Solution
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Light reaction of photosynthesis produces ATP and NADPH2 which in turn serve as energy source for fixation of carbon into organic compounds via assimilatory reactions of the calvin cycle in the absence of light i.e., the dark reaction of photosynthesis. Thus, the chemical energy of ATP and reducing energy of NADPH2 is known as assimilatory power. Hence, the correct answer is option A.

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