Ascomycota
There are currently three accepted classes in Ascomycota which are Saccharomycotina, Taphrinomycotina, and Pezizomycotina. Saccharomycotina mostly contains species which are single-celled (unicellular) like baker’s yeast (the yeasts that are commonly used in baking and result in the product rising) and Candida (the yeasts which cause the most fungal infections in the world). The species in Saccharomycotina reproduce by budding which is when an organism reproduces by forming a ‘bud’, this bud develops into a full organism. Taphrinomycotina are plant parasites that can has both a unicellular state and a filamentous (long, thread like structure) state when infecting plants. In their structure they do have an ascus but not ascomata. The largest subphylum in Ascomycetes is Pezizomycotina which contains all the species with fruiting bodies (except for Neolecta). Some examples members of the subphylum are cup fungi and truffles. These fungi reproduce by binary fission which is when the bacterium divides into two (or more) and each part regenerates to become a new cell which resembles the original cell.