1) Division 2) Subdivision zygomycota 3) Subdivision zygomycotina 4) Zygomycotina 1) Zygomycotina 
Mucoromycotina: Kickxellomycotina: Entomophthoromycotina: Zoopagomycotina: ==Cell wall== Zygomycetes exhibit a special structure of cell wall. Most fungi have chitin as structural polysaccharide, while zygomycetes synthesize chitosan. This is the deacetylated homopolymer of chitin. Chitin is built of β-1,4 bonded N- acetyl glucosamine. Fungal hyp...
<fungus> A division of true fungi that includes a wide variety of species, the best known being the black bread mould Rhizopus. Other species of bread moulds are used to make tempeh and sufu, both soybean dishes. ... (11 May 1997) ... 
[n] - division of fungi having sexually produced zygospores
subdivision Zygomycota noun division of fungi having sexually produced zygospores
the zygomycetes considered as belonging to the phylum Zygomycota of the kingdom Fungi.