Function Of The Cell
There are two different types of Epidermis there is upper and lower
Epidermis.
Upper Epidermis: It is a single later of cells containing few or no chloroplasts. The
cells are transparent to any light so the light can pass trough the first layer
and go through to the lower epidermis because there is chloroplast in the lower
epidermis. The upper surface is covered a waxy, waterproof cuticle, which serves
to reduce water loss from the leaf.
Lower epidermis: it has guard cells and stomata to allow exchange of
gases(carbon-dioxide and oxygen) between the plant and the outside atmosphere.
It also prevents water to pass through and gives protection is a minor function.
Although most of the cells of the lower epidermis resemble those of the upper
epidermis, each stoma is flanked by two sausage-shaped cells called guard cells.
These differ from the other cells of the lower epidermis not only in their shape
but also in having chloroplasts. The guard cells regulate the opening and
closing of the stomata. They control the exchange of gases between the leaf and
the surrounding atmosphere.
There are two different types of Epidermis there is upper and lower
Epidermis.
Upper Epidermis: It is a single later of cells containing few or no chloroplasts. The
cells are transparent to any light so the light can pass trough the first layer
and go through to the lower epidermis because there is chloroplast in the lower
epidermis. The upper surface is covered a waxy, waterproof cuticle, which serves
to reduce water loss from the leaf.
Lower epidermis: it has guard cells and stomata to allow exchange of
gases(carbon-dioxide and oxygen) between the plant and the outside atmosphere.
It also prevents water to pass through and gives protection is a minor function.
Although most of the cells of the lower epidermis resemble those of the upper
epidermis, each stoma is flanked by two sausage-shaped cells called guard cells.
These differ from the other cells of the lower epidermis not only in their shape
but also in having chloroplasts. The guard cells regulate the opening and
closing of the stomata. They control the exchange of gases between the leaf and
the surrounding atmosphere.