The class Sporozoa comprises protozoa characterized by spore-forming life cycle stages. Plasmodium, a notable sporozoan protozoan, causes human malaria and has a complex life cycle involving human and mosquito hosts. Other examples:
• Entamoeba: Amoeboid protozoan, causes amoebiasis.
• Trypanosoma: Flagellate protozoan, causes diseases like sleeping sickness.
• Paramaecium: Ciliate protozoan, found in freshwater.
Consequently, only Plasmodium is classified as a sporozoan protozoan.