BIOL 1002 Chapter : BIO CH 22 Notes
Document Summary
They consist of a tubular cell wall containing chitin surrounding a plasma membrane and cytoplasm. Chitin - a structural polysaccharide of modified sugars. In some fungi (coenocytic fungi) there are no separate cells and many nuclei are in a common cytoplasm. In other types of fungi (dikaryotic) the nuclei are partitioned into twos by septa. Septa - structures that partially separate the cytoplasm inside the hyphae(see22-1c). This separation is incomplete so that the cytoplasm is contiguous but the nuclei are kept apart. The general life cycle of fungi involves the production of spores. We"ve used this term before as a structure which is primarily a resting state . For fungi the spore is a haploid cell, which can grow directly into a hyphae. 22-8: basidia can be ejected from bottom side of mushroom, usually reproduce sexually, septa present the mycelium of this group may grow very large (underground) and occasionally produce a fairy ring (see fig.
