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.
Dermal Tissue System: The dermal tissue system makes up the outside covering of the plant. This system consists of the epidermis and the periderm. Epidermis: The epidermis consists of a single layer of cells that covers the majority of young plants.The epidermis is present throughout the life of plants that exhibit only primary growth. Primary growth refers to cells and tissues that originate from the apical meristems.arenchyma Tissue: The most abundant, diverse, and versatile cells in a plant are found in the parenchyma tissue. Parenchyma cells have thin cell walls, and their structure is somewhat non-descript, but tend to be more or less isodiametric (equal diameters in all directions).