Assertion : Six molecules of `CO_(2)`and twelve molecules of `NADPH^(+)H^(+)` and 18 ATP are used to from one hexose molecule.
Reason : Light reaction result in formation of ATP and `NADPH_(2)`

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 both the assertion and reason are false

Answer

A

Explanation

In the Calvin cycle or dark reaction light energy is converted into chemical energy in the form of ATP and `CO_2` reduced to glucose. In this pathway, 6 molecules of `CO_2`, 18 ATP and 12 NADPH are utilized to synthesize one molecule of glucose
`6RuBP + 6CO_2 + 18 ATP + 12NADPH rarr 6RuBP + C_6H_(12)O_6 + 18ADP + 12 NADP + 18Pi`
The light reaction of photosynthesis involves the synthesis of assimilatory power such as ATP and NADPH. .