Question

Explain how does the exchange of gases occur in plants across the surface of stems, roots and leaves.​

Answer 1

in leaves it occurs by stomatal pores and

in stem and roots by lenticles

Answer 2

In plants there are many tiny pores called stomata on leaves in stem which facilitate the exchange of gases.

$co2$

(carbon-dioxide)is taken in and oxygen given out {during photosynthesis} and vice versa during respiration.