Question

The gas that is evolved during photosynthesis is

• A. Oxygen
• B. Hydrogen
• C. Nitrogen
• D. Carbon Dioxide

Answer 1

The correct option is A

Oxygen

The correct option is A.
Explanation for Correct option:

1. Through the stomata, oxygen is released during photosynthesis.
2. When the water is subjected to photolysis, oxygen is created as a byproduct of photosynthesis.

Explanation for Incorrect option:
Option B:

1. Plants use sunlight during photosynthesis to split water into hydrogen and oxygen, which they subsequently combine with atmospheric carbon dioxide to produce carbohydrates.

Option C:

1. Almost all life depends on photosynthesis for its existence.
2. By affecting leaf structure and nitrogen allocation within leaves, nitrogen availability has a considerable impact on photosynthesis.
3. In order to maintain a high electron-transport rate during nitrogen stress, plants often spend more nitrogen on bioenergetics.

Option D:

1. Cells create sugar molecules and oxygen through the process of photosynthesis, which uses carbon dioxide and solar energy.
2. The photosynthetic cell uses these sugar molecules as the building blocks to create more intricate molecules like glucose.

Final answer: The gas that is evolved during photosynthesis is oxygen.