A preposition is a category of words that describe relationships. For instance if you lower a can of soda until it meets a table and now can remain on that table by itself, you have placed the soda on the table. On is a preposition, because it describes the relationship you've established between can and table.
Epidermis: The upper or outer layer of the two main layers of cells that make up the skin. The epidermis is mostly made up of flat, scale-like cells called squamous cells. Under the squamous cells are round cells called basal cells.The deepest part of the epidermis also contains melanocytes.These cells produce melanin, which gives the skin its color.he other main layer of the skin is the dermis, the inner layer of skin, that contains blood and lymph vessels, hair follicles, and glands. These glands produce sweat, which helps regulate body temperature, and sebum, an oily substance that helps keep the skin from drying out.
Abstract. The epidermis is the protective outer layer of clonally related cells covering all plant organs. It is composed of a number of specialised cell types which differentiate from the basal epidermal cell in adaptively significant frequencies and patterns.lant epidermis fulfils a basic protective function, but specialised cells within the epidermis have specific roles. The aerial epidermis originates in the shoot apical meristem, the root epidermis in the root apical meristem and the seedling epidermis arises by isolation of the outer layer during embryogenesis.