
Protozoa - Wikipedia
Protozoa (sg.: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as …
Protozoan | Definition, Parasites, Diseases, Characteristics, Size ...
2025年2月28日 · Protozoan, organism, usually single-celled and heterotrophic (using organic carbon as a source of energy), belonging to any of the major lineages of protists and, like most …
Protozoa: Structure, Classification, Growth, and Development
Protozoa are microscopic unicellular eukaryotes that have a relatively complex internal structure and carry out complex metabolic activities. Some protozoa have structures for propulsion or …
Protozoa - Definition, Types and Examples - Biology Dictionary
2017年4月28日 · Organisms known as protozoa include a wide range of organisms, most of which are free-living single-celled eukaryotes. Therefore, protozoa fit into the Domain Eukarya.
Protozoa - Definition, Examples, Characteristics, and Classification
2023年8月3日 · Protozoa are unicellular eukaryotic microorganisms having a membrane-bound nucleus and other organelles within their cells. Despite their small size, they are incredibly …
What is Protozoa? - Classification, Characteristics, Examples and ...
Protozoa are unicellular, eukaryotic, heterotrophic organisms. They are either free-living or parasites. There are around 65000 species of protozoans categorised in different groups. …
Protozoa and the Illnesses They Cause - Verywell Health
2022年10月14日 · Protozoa are single-celled organisms that can sometimes cause diseases. Common protozoan diseases include malaria, giardia, and toxoplasmosis. Diagnosing …
9.1: Characteristics of Protozoa - Biology LibreTexts
2023年8月31日 · Protozoa are unicellular eukaryotic microorganisms lacking a cell wall and belonging to the Kingdom Protista. Although there are nearly 20,000 species of protozoa, …
Protozoan - Cell Structure, Nutrition, Reproduction | Britannica
2025年2月28日 · Protozoan - Cell Structure, Nutrition, Reproduction: The protozoan cell carries out all of the processes—including feeding, growth, reproduction, excretion, and …
Microbiology - Protozoa, Eukaryotes, Unicellular | Britannica
2025年2月4日 · Protozoa, or protozoans, are single-celled, eukaryotic microorganisms. Some protozoa are oval or spherical, others elongated. Still others have different shapes at different …