to preserve water
stomata
Xerophytes definitly have their stoma on the BOTTOM of the leaf not the top, this is to minimise water loss through transpiration
The stoma, or pores of a plant control all gas exchange. The stoma is found in the epidermis of the leaf.
The stoma (stomata)
stoma
A stoma is used to control gas exchange -- oxygen and carbon dioxide.
The stoma, or pores of a plant control all gas exchange. The stoma is found in the epidermis of the leaf.
Stoma of the leaf.
Stoma of the leaf.
A stoma is a pore found in a leaf's epidermis. This pore is used primarily for gas exchanges (carbon dioxide/oxygen), but it also has another unavoidable function. That function is decreasing the water in the leaf. The water evaporates and leaves the leaf through the stoma. In a dessert, this would be particularly harmful to the plant, as the heat would evaporate more and more of the water, which can then escape through the stomata, dehydrating the plant.
The stoma on the underside of the leaf
the stoma