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  2. Protozoa - Wikipedia

    en.wikipedia.org/wiki/Protozoa

    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 other microorganisms or organic debris.

  3. Protist - Wikipedia

    en.wikipedia.org/wiki/Protist

    The metamonads (Metamonada) are a phylum of completely anaerobic or microaerophilic protozoa, primarily flagellates. Some are gut symbionts of animals such as termites, others are free-living, and others are parasitic. They include three main clades: Fornicata, Parabasalia and Preaxostyla. [13]

  4. Taxonomy of Protista - Wikipedia

    en.wikipedia.org/wiki/Taxonomy_of_Protista

    A protist (/ ˈ p r oʊ t ɪ s t /) is any eukaryotic organism (one with cells containing a nucleus) that is not an animal, plant, or fungus.The protists do not form a natural group, or clade, since they exclude certain eukaryotes with whom they share a common ancestor; [a] but, like algae or invertebrates, the grouping is used for convenience.

  5. Kingdom (biology) - Wikipedia

    en.wikipedia.org/wiki/Kingdom_(biology)

    Later two further main ranks were introduced, making the sequence kingdom, phylum or division, class, order, family, genus and species. [4] In 1990, the rank of domain was introduced above kingdom. [5] Prefixes can be added so subkingdom (subregnum) and infrakingdom (also known as infraregnum) are the two ranks immediately below kingdom ...

  6. Microfauna - Wikipedia

    en.wikipedia.org/wiki/Microfauna

    For example, protozoa can help maintain the quality of the soil by grazing on soil bacteria. Through their grazing, the protozoa can help maintain populations of bacteria, allowing the bacteria to more efficiently decompose dead organic material which will improve the fertility of the soil .

  7. Phylum - Wikipedia

    en.wikipedia.org/wiki/Phylum

    The term phylum was coined in 1866 by Ernst Haeckel from the Greek phylon (φῦλον, "race, stock"), related to phyle (φυλή, "tribe, clan"). [4] [5] Haeckel noted that species constantly evolved into new species that seemed to retain few consistent features among themselves and therefore few features that distinguished them as a group ("a self-contained unity"): "perhaps such a real and ...

  8. Ciliate - Wikipedia

    en.wikipedia.org/wiki/Ciliate

    Ciliate species range in size from as little as 10 μm in some colpodeans to as much as 4 mm in length in some geleiids, and include some of the most morphologically complex protozoans. [4] [5] In most systems of taxonomy, "Ciliophora" is ranked as a phylum [6] under any of several kingdoms, including Chromista, [7] Protista [8] or Protozoa. [9]

  9. Cytostome - Wikipedia

    en.wikipedia.org/wiki/Cytostome

    [4] Cytopharynx ... Ciliophora is a phylum of protozoa. The cytostome in this phyla can be either apical or lateral. [5] Function