Protozoa

Some protozoa have two-phase life cycles, alternating between proliferative phases (troph) and dormant cysts

Protozoan parasites that infect human:

Amoeba

Amoeboid motility (e.g. pseudopods), asexual reproduction (binary fission). 

Flagellata

Flagellar (flagellum, whip) motility, asexual reproduction (binary fission)

Apicomplexia

Infectious stages: Sporozoite, Merozoite, Trophozoite, Hypnozoite, Gametocyte

Three major divisions of the living world

Protozoan parasites that infect human