A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
The energy balance of photosynthesis is : \[6C{{O}_{2}}+12{{H}_{2}}O\xrightarrow{l\text{ight}}{{C}_{6}}{{H}_{12}}{{O}_{6}}+6C{{O}_{2}}+6{{H}_{2}}O\] which represents a storage of 686,000 calories per mole. This energy is provided by a total of 12 NADPH and 18 ATP molecules, which represent 750,000 calories. The efficiency reached by the PCR cycle is thus as high as\[90%(686/750\times 100=90%)\].
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