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Phycomycetes commonly occur in aquatic habitats, on decaying wood in moist places or as plant parasites. Their mycelium is aseptate and coenocytic, and they produce motile zoospores or non-motile aplanospores inside sporangia.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Fungi - Phycomycetes Ascomycetes Basidiomycetes
Phycomycetes possess aseptate, coenocytic mycelium. Their motile zoospores or non-motile aplanospores are produced endogenously inside sporangia. Rhizopus is an example.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Fungi - Phycomycetes Ascomycetes Basidiomycetes
Fungal mycelia are usually divided by cross-walls called septa. However, according to NCERT Class 11 Biology, members of the class Phycomycetes (which includes forms like Mucor and Rhizopus) are distinctly characterized by an 'aseptate' mycelium. Because they lack cross-walls, their mycelium appears as continuous, elongated tubes densely filled with a highly multinucleate cytoplasm, a specialized condition biologically termed 'coenocytic'.
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi
