Question

yeast is not included in protozoan but in fungi. why?

Answer 1

Although all fungi are multicellular and filamentous, but yeast is an exception. It is on the basis of other characteristics that makes yeast a fungi and not a protozoan. In fungi food acquisition method is absorptive but protozoans have holozoic mode of nutrition. Also, in fungi reproduction is through spore formation or budding in case of yeast but protozoans exhibit reproduction by gamete formation or by conjugation.