Euglena vs. Protozoa — What's the Difference?

Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 800 species.

Protozoa (also protozoan, plural protozoans) is an informal term for a group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic tissues and debris. Historically, protozoans were regarded as "one-celled animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae.

Any of various single-celled freshwater organisms of the genus Euglena, characterized by the presence of chlorophyll, a reddish eyespot, a single long anterior flagellum, and a second, rudimentary flagellum.

Any of numerous chiefly single-celled eukaryotic organisms, most of which move about freely and ingest food, including the amoebas, ciliates, flagellates, and apicomplexans. Protozoans along with certain algae, oomycetes, and some other groups make up the protists.

(biology) Any of several protists, of the genus Euglena, that contain chloroplasts and a single flagellum.

Plural of protozoan

Minute single-celled green freshwater organism having a single flagella; often classed as algae

Plural of protozoon

The lowest of the grand divisions of the animal kingdom.

In some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers