parasitic protozoans examples

Phylum Protozoa is a group within the kingdom Protista consisting of single-celled, eukaryotic organisms that can be free-living or parasitic. These organisms are characterized by their ability to move independently using structures such as cilia, flagella, or pseudopodia. Protozoa are diverse in form and function and can reproduce sexually or asexually. They are found in a variety of environments, including freshwater, marine, and soil habitats. Some protozoans are known to cause diseases in humans and other animals.