Question

In overall process of photosynthesis, the number of $C{O}_2$, water, sugar and $O_2$ molecules utilised and produced

• A. 12
• B. 13
• C. 19
• D. 31

Answer 1

The correct option is D 31

A) To produce one molecule of sugar, totally 6 molecules of ${CO}_2$ and 12 molecules of water are required.
B) 18 molecules are consumed and 13 molecules are produced.
C) For 1 glucose (sugar) molecule, 6 molecules of ${CO}_2$, 12 molecules of water are required. The total number of molecules involved is 6 + 12 + 1 + 6 + 6 = 31.
D) Hence, 31 molecules are involved in the overall process of photosynthesis.

So the correct answer is '31'.