Question

HQ-4: In this exercise, we are measuring photosynthesis by the generation of oxygen. Oxygen is produced during the light reaction only. Carbon dioxide is used only in the light-independent reaction. Why, then, do we need a “carbon source” (sodium bicarbonate)?

Answer 1

We need a “carbon source" during photosynthesis process because carbon is converted into glucose molecule.

Why do we need a “carbon source”?

During photosynthesis, plants absorb carbon dioxide and sunlight to create glucose and oxygen. This glucose molecule is needed for building plant structures.

So we can conclude that we need a “carbon source" during photosynthesis process because carbon is converted into glucose molecule.

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