A mycorrhiza (Greek: Î¼ÏÎºÏÏ, mykÃ³s, fungus, and ÏÎ¯Î¶Î±, riza, root, pl. mycorrhizae or mycorrhizas) is a symbiotic association between a fungus and the roots of a vascular host plant. The term mycorrhiza refers to the role of the fungi in the plants' rhizosphere, its root system. Mycorrhizae play important roles in soil biology and soil chemistry.
The dermis consists of a papillary and a reticular layer which serve to protect and cushion the body from stress and strain. Differentiate among the regions of the dermis and the hypodermis. The dermis is divided into a papillary region and a reticular region.
deeper, major portion of the dermis that extends from the papillary layer to the underlying subcutaneous layer consists primarily of dense irregular connective tissue through which large bundles of collagen fibers project in all directions and are interwoven into a meshwork that surrounds structures in the dermis.rotective functions of the skin. acts as a physical barrier that protects the entire body from physical injury and trauma offers protection against harmful chemicals, toxins, microbes, and excessive heat or cold protects deeper tissues from solar radiation, especially UV rays.