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.
Both layers comprise the dermis; the papillary layer is the upper layer and the reticular layer is the lower. The papillary layer is loose areolar connective tissue and the re â¦ ticular layer is a dense irregular connective tissue.he Papillary dermis and the Recticular dermis.   epidermis   endodermis The dermis does not have layers. However, the dermis is one of three major layers of skin.