For other uses, see API (disambiguation). In computer programming, an Application Programming Interface (API) is a set of subroutine definitions, protocols, and tools for building application software. In general terms, it is a set of clearly defined methods of communication between various software components.
7. epidermis. The epidermis cells (from the Greek ÎµÏÎ¯Î´ÎµÏÎ¼Î¯Î´Î±, meaning over-skin) is a single-layer of cells that covers the leaves, flowers, roots and stems of plants.It forms a boundary between the plant and the external environment.tomata are holes in the plant epidermis that are surrounded by two guard cells, which control the opening and closing of the aperture. These guard cells are in turn surrounded by subsidiary cells which provide a supporting role for the guard cells. Stomata begin as stomatal meristemoids.
The epidermis is the primary outer protective covering of the plant body. Cells of the epidermis are also modified to form stomata and hairs of various kinds. Epidermis waxy layer cuticle The epidermis (usually one layer of cells deep) covers the entire stem, leaf, and root of the young plant. The cells are living, have thick primary cell walls, and are covered on their outer surface by a special cuticle with an outer waxy layer. The cells are tightly interlocked in different patterns. upper epidermis of a leaf epidermis of a stem 50 Âµm Stomata guard cells air space 5 Âµm Stomata are openings in the epidermis, mainly on the lower surface of the leaf, that