Asserton : One molecule of `CO_(2)` is fixed to give 686 kcal in photosynthesis.
Reason : To from a hoxose, six molecules of `CO_(2)` are fixed.

Options

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 the assertion is false but the reason is true

Answer

D

Explanation

The free energy changes for the synthesis of hexose from `CO_2` and `H_2O` is + 686 Kcal. As six molecules of `CO_2` in involved to form one molecule of hexose the energy input per `CO_2` molecules will be 114 Kcal.