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protozoa    音标拼音: [pr,otəz'oə]
n. 原生动物类

原生动物类

Protozoa
n 1: in some classifications considered a superphylum or a
subkingdom; comprises flagellates; ciliates; sporozoans;
amoebas; foraminifers [synonym: {Protozoa}, {phylum Protozoa}]

Protozoon \Pro`to*zo"["o]n\ (-[o^]n), n.; pl. {Protozoa}. [NL.]
(Zool.)
(a) One of the Protozoa.
(b) A single zooid of a compound protozoan.
[1913 Webster]


Protozoa \Pro`to*zo"a\, n. pl. [NL., fr. Gr. ? first zo^,on an
animal.] (Zool.)
The lowest of the grand divisions of the animal kingdom.
[1913 Webster]

Note: The entire animal consists of a single cell which is
variously modified; but in many species a number of
these simple zooids are united together so as to form a
compound body or organism, as in the Foraminifera and
Vorticell[ae]. The reproduction takes place by fission,
or by the breaking up of the contents of the body after
encystment, each portion becoming a distinct animal, or
in other ways, but never by true eggs. The principal
divisions are Rhizopoda, Gregarin[ae], and Infusoria.
See also {Foraminifera}, {Heliozoa}, {Protoplasta},
{Radiolaria}, {Flagellata}, {Ciliata}.
[1913 Webster]


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  • Protozoa - Wikipedia
    Protozoa may also live as mixotrophs, combining a heterotrophic diet with some form of autotrophy Some protozoa form close associations with symbiotic photosynthetic algae (zoochlorellae), which live and grow within the membranes of the larger cell and provide nutrients to the host
  • Protozoa and the Illnesses They Cause - Verywell Health
    Protozoa are tiny, single-celled organisms that can cause diseases like malaria, giardia, and toxoplasmosis Protozoan infections can be identified through blood, stool tests, or biopsies
  • Protozoan | Definition, Parasites, Diseases, Characteristics . . .
    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
  • Protozoa - Definition, Examples, Characteristics, and . . .
    Protozoa are unicellular eukaryotic microorganisms having a membrane-bound nucleus and other organelles within their cells Despite their small size, they are incredibly diverse and exist in various aquatic and terrestrial environments worldwide
  • Protozoa- Definition, Characteristics, Classification, Examples
    Protozoans exhibit mainly two forms of life; free-living (aquatic, freshwater, seawater) and parasitic (ectoparasites or endoparasites) They are also commensal in habitat They are small, usually microscopic, not visualize without a microscope They are the simplest and primitive of all animals
  • Protozoa - Definition, Classification, Characteristics . . .
    Protozoa, comprising approximately 50,000 known species, are among the simplest and most primitive of all eukaryotic organisms They exhibit diverse forms of life, primarily categorized as either free-living or parasitic, and they can be found in various habitats, including freshwater and seawater
  • What are Protozoa? - Microbiology Society
    What are Protozoa? Protozoa are micro-organisms which have a membrane bound nucleus that can't be categorised as a fungi, animal or plant Most protozoa are free living, but some are parasitic They are heterotrophs, meaning that they eat other plants or animals for energy and nutrients





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