Explain how does exchange of gases occur in plants accross the surface of stem , root and leaves
Answers
STEM
In such plants the exchange of gases takes place with the help of stomata. In roots the exchange of gases takes place by diffusion from membrane of root hairs. When the stem and roots mature, numerous pores are found on the surface of the roots and stem. ... These lenticels help the plants in exchange of gases.
Leaves. The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
ROOTS
exchange of gases also occurs in the roots of plants. They do so by taking in oxygen from the air spaces present in soil. ... Carbon dioxide produced during respiration move outside through the root hairs in the same way by the process of diffusion