Class of fungi

Mode of nutrition

Mode of reproduction

Phycomycetes:

Obligate parasites

Asexual reproduction takes place by motile zoospores or non-motile aplanospores.

Sexual reproduction may be of isogamous, anisogamous, or oogamous type.

Ascomycetes:

saprophytic, decomposers, parasitic or coprophilous

Asexual reproduction occurs through asexual spores produced exogenously, such as conidia produced on conidiophores.

Sexual reproduction takes place through ascospores produced endogenously in sac like asci and arranged inside ascocarps.

Basidiomycetes:

Parasites

Asexual reproduction takes place commonly through fragmentation. Asexual spores are absent.

 Sex organs are absent but sexual reproduction takes place through plasmogamy. It involves fusion of two different strains of hyphae.

Deuteromycetes:

saprophytes ,  parasites

Asexual reproduction is the only way of reproduction in deuteromycetes. It occurs through asexual spores called conidia. Sexual reproduction is absent in deuteromycetes