Practice question

Zoospores are wall-less, flagellated motile spores requiring free water for dispersal and chemotaxis, common in aquatic fungi particularly Chytridiomycota, Blastocladiomycota and some Neocallimastigomycota inhabiting freshwater ponds, streams and moist soils rich in organic debris. Propelled by posterior whiplash flagellum utilizing ATP, they chemotactically locate substrates like pollen, chitin or keratin before encysting. Chlamydospores, sporangiospores and oidia non-motile, adapted for aerial or substrate dispersal via wind. Therefore motile freshwater fungal spore matches zoospore, reflecting retention of ancestral opisthokont flagellar apparatus lost in terrestrial Dikarya.