A cluster of them is called a mycelium, and they are not present in lower organisms such as yeasts which instead reproduce exclusively through budding.
The outer walls of these structures are composed of mannan, glucan, chitosan, and chitin, and are well-protected from predators despite only being .2 micrometers thick. They communicate to other areas of the organism by a process called cytoplasmic streaming, which is propelled by the contractile protein actomyosin. A cluster of them is called a mycelium, and they are not present in lower organisms such as yeasts which instead reproduce exclusively through budding. FTP, name these filaments, examples of which include mycorrhizae, which serve as structural support and as a method of sexual reproduction in fungi.
The outer walls of these structures are composed of mannan, glucan, chitosan, and chitin, and are well-protected from predators despite only being .2 micrometers thick.
hyphae