The Ascomycota sac fungi is monophyletic and comprises about 75% of the described fungi. It comprises the majority of fungi that mix together with algae to create lichens as well as the vast majority of fungi do not have morphological evidence for sexual reproduction. Among the Ascomycota are some famous fungi: Saccharomyces cerevisiae, the yeast of commerce and foundation of the baking and brewing industries (not to mention molecular developmental biology), Penicillium chrysogenum, producer of penicillin, Morchella esculentum, the edible morel, and Neurospora crassa, the "one-gene-one-enzyme" organism.
Chytridiomycota is a sub-group of zoosporic organisms from the kingdom Fungi. They are also known as chytrids. Named after the Ancient Greek word khutridion, which means "little pot", it refers to the structure that contains unreleased zoospores. The earliest diverging fungal lineages are the Chytrids. Their membership in kingdom Fungi can be seen with chitin cell wall, posterior whiplash flagellum and absorptive nutrition. They also use glycogen to store energy and produce lysine through the a-amino acid (AAA).
Eyespot help in cell’s phototaxis, it senses the intensity and direction of light source and responds to it. In response, it helps the organism in swim towards the light (positive phototaxis), or away from it (negative phototaxis).