Question

The CO₂ present in the atmosphere enters the stomata by ____.

Answer 1

Stomata:

1. Carbon dioxide is obtained by plants from the air via their leaves.
2. The carbon dioxide present in the atmosphere enters leaves through tiny holes present on their lamina known as stomata.
3. Each of the stomata is surrounded by a pair of guard cells that regulate the opening and closing of these pores.

Diffusion:

1. The migration of individual molecules of a substance from one area of higher concentration to another area of lower concentration is known as diffusion.
2. In plants, carbon dioxide enters the stomata of their leaves by the process of diffusion.

Final Answer: The CO₂ present in the atmosphere enters the stomata by diffusion.