Question

Which of the following is not needed for the germination of seeds.

• A. Water.
• B. Oxygen in the air.
• C. Suitable temperature.
• D. Carbon dioxide in the air.

Answer 1

The correct option is D

Carbon dioxide in the air.

Germination of seeds:

1. The process of sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy.

Correct option: D.

Explanation for correct option:

1. Carbon dioxide in the air does not have any effect on the germination of the seeds.

Explanation for incorrect option:

Option A:

1. Water plays an essential role in seed germination by providing humidity for the vital activities of protoplasm development.

Option B:

1. Oxygen in the air plays a crucial role in the growing embryo by softening the seed coats and increases the seed permeability.

Option C:

1. The optimum temperature required for seed germination is 25^oC to 35^oC, thus suitable temperature is required for seed germination.

Final answer: Carbon dioxide in the air is not needed for the germination of seeds.