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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
  • Protozoan | Definition, Parasites, Diseases, Characteristics, Size . . .
    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 Classification
    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 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
  • 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
  • About Parasites | Parasites | CDC
    Protozoa are microscopic, one-celled organisms that can be free-living or parasitic in nature They are able to multiply in humans, which contributes to their survival and also permits serious infections to develop from just a single organism
  • Protozoa - Definition, Classification, Characteristics, Structure . . .
    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
  • Protozoa: Structure, Locomotion, Reproduction, and Adaptations
    Protozoa, a diverse group of single-celled eukaryotic organisms, play important roles in ecosystems and human health They inhabit various environments, from freshwater to marine systems, and even live within other organisms as symbionts or pathogens
  • Protozoa - New World Encyclopedia
    Protozoa (in Greek proto = first and zoa = animals) is a diverse group of single- celled, microscopic or near-microscopic eukaryotes (organisms whose cells have nuclei) that commonly show characteristics usually associated with animals, most notably mobility and heterotrophy
  • PARASITES: PROTOZOA – Red Mountain Microbiology
    Protozoa is not an official term used in the classification of microorganisms Rather, it is a term used to group eukaryotic organisms that are unicellular and have no cell wall These organisms are frequently organized into subgroups based on their means of locomotion





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