Lenticel

Lenticels are openings that allow oxygen and carbon dioxide to diffuse between the living cells of the stem and the air. [Discussion] Welcome&Next Search 16 December 2001 ... Full article ...

lenticel Isolated areas of loosely arranged cells in the cork surfaces of stems, roots, and fruit that allow interchange of gases between internal tissues and the atmosphere through the periderm.

lenticels. Natural openings in the surface of a tuber or stem, similar to leaf stomata, that can open and close and allow gas exchange. lepidopterous. Of or pertaining to the Order Lepidoptera, the moths and butterflys.

lenticel A small pore found on the surface of stems and roots in higher plants through which gas exchange can take place. leucocyte A white blood cell; typically functions in immunity, such as phagocytosis or antibody production.

The photo shows the lenticels in the bark of a young stem. In many annual plants, the stems are green and almost as important for photosynthesis as the leaves. These stems use stomata rather than lenticels for gas exchange.

botany) the loss of water by evaporation in terrestrial plants, especially through the stomata (accompanied by a corresponding water uptake from the roots); a process in which the water vapor escapes through the plant via its stomata and lenticels ...

cork cells externally and sometimes phelloderm cells internally. Those three tissues form the periderm, which replaces the epidermis in function. Areas of loosely-packed cells in the periderm that function in gas exchange are called lenticels.

See also: Cells, Plant, Tissue, Xylem, Organ