Mycelium is a vegetative part of fungi which consist of branching and thread like hyphae. Hyphae is a structural unit of mycelium. Mycelium is a procuring structure of fungi. The medium upon which mycelium grows. Mycelium absorption the food digestion of food , digestion of food , excretion , respiration , and growth. In mycelium hyphae spread in all direction. Hyphae usually colorless particularly embedded in sub stratum. In aerial hyphae in some fungi become colored black,orange,yellow,blue,brown and red. Color is confined with Hyphal wall. Pigments are present in protoplasm and they don not form integral part of living matter. They play no of role in physiology of fungi. Apical. The growth in length take place at the tips of hypae is called apical.

