Question

Which part of root is involved in the exchange of respiratory gases in plants?​

Answer 1

Answer:

A mature root contains pores on the outer layer known as lenticels which help in the exchange of gases i.e oxygen and carbon dioxide.

Answer 2

Answer:

A mature root contains pores on the outer layer known as lenticels which help in the exchange of gases i.e oxygen and carbon dioxide.

or

The exchange of gases in roots of a plant takes place by the process of diffusion. During diffusion, oxygen diffuses into the root hairs and passes into the root cells, from where the carbon dioxide moves out into the soil.