Phylums

Zoomasts (Subclass Zoomastigina) These are flagella-bearing protozoans which have truly animal methods of nutrition. Many are parasitic and have been extensively studied as they affect the life of man. The number of free-living species is not certain. They are morphologically diverse and are best considered in their orders. Protomonads (Order Protomonadina) All members have only … Read more

The flagellates (Class Mastigophora) This class contains organisms which are actively motile by means of flagella. They may have a single flagellum or they may have hundreds, so that they bear a strong superficial resemblance to dilates. The nuclei are usually restricted to one per cell but if there is more than one they are … Read more