Protozoa vs. Protista

Protozoa

The lowest of the grand divisions of the animal kingdom.

Protozoanoun

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

Protozoa

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 , because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae.

Protista

A provisional group in which are placed a number of low microscopic organisms of doubtful nature. Some are probably plants, others animals.

Protistanoun

eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae