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Organisms traditionally classified as protozoa are abundant in aqueous environments and soil, occupying a range of trophic levels. The group includes flagellates (which move with the help of undulating and beating flagella ).
All protozoal species are assigned to the kingdom Protista in the Whittaker classification. The protozoa are then placed into various groups primarily on the basis of how they move. The groups are called phyla (singular, phylum) by some microbiologists, and classes by others.
Classification. On the basis of light and electron microscopic morphology, the protozoa are currently classified into six phyla. Most species causing human disease are members of the phyla Sacromastigophora and Apicomplexa. Life Cycle Stages.
- Robert G. Yaeger
- 1996
- 1996
Protozoa species move on their own by one of the three types of locomotor organelles such as flagella, cilia, or pseudopodia. Protozoa reproduce by the method of binary fission or multiple fission. Some of the members reproduce by asexual mode, some by sexual means, and some by both.
Jul 15, 2024 · 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 protists, typically microscopic. All protozoans are eukaryotes and therefore possess a “true,” or membrane-bound, nucleus.
Apr 28, 2017 · Although the different phyla of the kingdom Protista are not closely related, they are nonetheless classified together because of their large differences from the other kingdoms of plants, animals and fungi. The name “protozoa” has a dynamic history, at one time including only the “animal-like” unicellular forms of life.
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Aug 3, 2023 · Classification of Protozoa. The modern classification of protozoa is based on the modified form proposed by Levine et al. in 1980. It is divided into 7 phyla, among which Sarcomastigophora, Apicomplexa, Microspora, and Ciliophora contain parasitic representatives.
