Zygomycetes, Ascomycetes, Basiliomycetes

Zygomycetes develop zygospore, Ascomycetes ascospore, Basidiomycetes basidiospore. Zygomycetes such as bread mold (Rhyzopus stolonifer), gametangia fuse and haploids fuses inside to form a thick walled zygote. Ascomycetes (division: Ascomycota), e.g. red, brown, blue-green molds, pink bread mold (Neurospora crassa), antheridium and ascogonium fuse to produce ascogenous hyphae. Dikaryon cells multiply by mitosis in a hook cell, then form zygote by nuclear fusion. The zygote goes through meiosis, mitosis, to form ascospores which are stored in ascus. Ascocarp is a cup shaped apparatus which contains asci. Yeast does sexual reproduction and thus classified as ascomycetes (a cell and alpha). Claviceps purpurea is the cause of disease ergot due to LSD (lysergic acid diethylamid). In Basidiomycetes such as mushrooms, the basidiospore is haploid. When the germed mycelium fused with type, it forms a button, basidiocarp, then a stalk and a cap. The gill under the cap is covered with basidia which produce basidiospore by meiosis.