What are the four groups of protozoans?
The four major groups of protozoans are the sarcodines (that form pseudopods, like amoebae), the mastigophores (flagellated, such as the trypanosome that causes Chagas' disease), the ciliated (like paramecia) and the sporozoans (spore-forming, such as plasmodia).
Protists Review - Image Diversity: sarcodines mastigophores ciliated protozoans sporozoans