Question

During the process of photosynthesis oxygen gas released comes out

• A. from ${CO}_2$
• B. by splitting water
• C. from glucose
• D. from atmospheric air

Answer 1

The correct option is B

by splitting water

The correct option is B.

Explanation for the correct option

1. Photosynthesis is the process of synthesizing glucose by using carbon dioxide and water as the raw materials in the presence of sunlight.
2. This process involves two phases light and dark reactions.
3. The light reaction involves the absorption of light energy by chlorophyll for the splitting of water molecules.
4. The splitting of water leads to the release of oxygen gas.

Explanation for incorrect options

Option A:

${\mathrm{CO}}_2$ molecules reduced in photosynthesis to form glucose molecules.

Option C:

Glucose is the end product of photosynthesis that is stored in the form of starch.

Option D:

The oxygen present in the atmosphere is released by the plants during photosynthesis.

The splitting of water by the light energy release oxygen gas during photosynthesis.