Which of the following oxide of `C` is involved in the process of photosynthesis ?

Options

A. `CO_(2)`
B. `CO`
C. `C_(5)O_(6)`
D. `C_(3)O_(2)`

Answer

A

Explanation

`CO_(2)`, which is normally present to the extent of `-0.03%` by volume in the atmosphere, is removed (absorbed) by plants through a process called photosynthesis. It is the process by which absorbed `CO_(2)` combines with `H_(2)O` to form carbohydrates (glucose, starch) in the presence of chlorophyll (green coloring pigment of leaves) and sunlight:
`6CO_(2) + 12H_(2)O underset("Chlorophyll") overset(hv)rarr C_(6)H_(12)O_(6) + 6O_(2) + 6H_(2)O`
Thus, by the process of photosynthesis, plants make food for themselves as well as for animals and human beings.