Question

Assimilatory power refers to the

• A. Generation of ATP and NADPH${}_2$
• B. Reduction of CO${}_2$
• C. Splitting of water
• D. Disintegration of plastids

Answer 1

Answer: (A)

Generation of ATP and NADPH${}_2$

Light reaction of photosynthesis produces ATP and NADPH${}_2$ 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 NADPH${}_2$ is known as assimilatory power. Hence, the correct answer is option A.