Some examples of protozoa are Amoeba, Paramecium, Euglena and Trypanosoma. Size.
Species
Cell type
Size in micrometres
Entamoeba histolytica
parasitic amoeban
15–60
Balantidium coli
parasitic ciliate
50–100
Paramecium caudatum
free-living ciliate
120–330
Amoeba proteus
free-living amoebozoan
220–760
