dermal tissue system The protective covering of plants; generally a single layer of tightly packed epidermal cells covering young plant organs formed by primary growth. dermis ...
The dermal tissue of a plant, more specifically referred to as the epidermis, is an outer protective layer of typically polygonal cells, which helps defend against injury and invasion by foreign organisms.
The epidermal tissue includes several differentiated cell types: epidermal cells, guard cells, subsidiary cells, and epidermal hairs (trichomes). The epidermal cells are the most numerous, largest, and least specialized.
The epidermal tissue functions in prevention of water loss and acts as a barrier to fungi and other invaders. Thus, epidermal cells are closely packed, with little intercellular space.
The mesodermal tissue surrounding the various parts of the epithelial labyrinth is converted into a cartilaginous ear-capsule, and this is finally ossified to form the bony labyrinth.
epidermis (1) the dermal tissue system in plants. (2) the outer covering of animals. epididymis The long, coiled narrow tube running from the testis to the vas deferens in the higher vertebrates. It functions to store sperm.
ground meristem The basic or fundamental tissue of the apical meristem; dermal tissues surround the ground meristem, and the provascular strands are embedded in it. ground parenchyma The basic ground tissue consisting of living parenchymal cells.
... staining is detected in the invaginating archenteron (an endomesodermal tissue) ... mesenchyme founder cells, which occupy the tip of the archenteron. ... Full article ...
See also: Tissue, Cells, Trans, Lateral, Roots
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