Thallus.

1-Unicellular Thallus. In some of lower fungi such as chytrides. The thallus is more or less spherical and singel called structure. At the time of reprodection the single cell become reprodection unit. Such fungi is called holo artic fungi. Whole thallus of fungus become converted into a reprodective cell. In the vegetative and reprodective stages don not occur to gather in some time. 2-Filamentous Thallus. Mejourity fungi have filamentous thallus. Filament originates through the germination of spore. Spore germinates when it lands on substratum and other conditions are favour able. In some spore produced only short tubular structure of limit grow. And in most fungi,spore give rise to a fluffy cottony mas. These ong fine filaments are known as hyphae.Haphae is a greek word,haphae mean web.