Kingdom Protista (Gr. Protistas - first of all)  includes unicellular and colonial eukaryotic, auotrophic and heterotrophic organisms. They are broadly divided into three groups: photosynthetic protists (protistan algae), slime moulds  (myxomycetes) and protozoans protists.
Example of Protozoa (Protista)
1. Example of Photosynthetic Protists: Photosythetic protists are photoautotrophic like diatoms, dinoflagellates and euglenoids.- Dinoflagellates: Ceratium, Glendinium, Gymnodinium and Gonyaulax.
- Diatoms:  Navicula,  Nitzchia,  Melosira, Cymbella and Pinnularia.
- Euglenoids: Euglena, Phacus, Peranema and Eutreptia.
  Physarum and Physarella.
3. Example of Protozoan Protists
Amoeba, Entamoeba, Giardia, Plasmodium, Paramecium,  Leishmania  and Trypanosoma.