Lenticel
a loosely-packed mass of cells in the bark of a woody plant, visible on the surface of a stem as a raised powdery spot, through which gaseous exchange occurs.
One of many raised pores on the stems of woody plants that allow the interchange of gas between the atmosphere and the interior tissue.A small pore found near stomata in plants that allows gaseous exchange to occur between the internal and external environments of the plant.
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are meristematic, simple, secretory, and complex tissues. Find out the distinctive characteristics of each tissue in terms of structure and function...
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells differentiate and become specialized in relation to the function they will perform. Learn more about plant meristems in this tutorial...