They are long and slender with very oblique end walls for increasing the surface area. They contain pits . Transfer Cells Transfer cells have the morphology of parenchyma cells, but they function much differently. Their job is to carry materials in across their cell membrane and deposit these materials somewhere else, carrying them across their cell membrane as it is deposited either in another cell or where it can be picked up by another cell. These cells contain a greater proportion of mitochondria , clustered along the plasmalemma , for the production of energy for this cellular pumping action.
Transfer cells are abundant in the mesophyll of leaves.
They exist along the veinlets where they pick up glucose from the mesophyll, convert it into sucrose , and deposit it in the sieve-tube member . Transmitted Transpiration Transpiration occurs while photosyntheis is occuring. While the stomata are open for gas exchange, water vapor evaporates from the surface of the spongy parenchyma and escapes out through the stomata into the atmosphere. The loss of water by this means from the plant is called transpiration. Triarch Trichomes Trichomes are plant hairs on the surface of the epidermis of any plant organ that contains an epidermis, including stems, leaves, and fruits.