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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
    The word "protozoa" (singular protozoon) was coined in 1818 by zoologist Georg August Goldfuss (=Goldfuß), as the Greek-derived calque of the German Urthiere, meaning "primitive, or original animals" (ur- 'proto-' + Thier 'animal') [11]
  • 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
  • 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 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 Is a Protozoa? Characteristics and Examples
    Protozoa are single-celled organisms found nearly everywhere on Earth Learn what makes them unique, how they live, and which ones can cause human disease
  • What are Protozoa? - Microbiology Society
    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
  • Microbiology - Protozoa, Eukaryotes, Unicellular | Britannica
    Microbiology - Protozoa, Eukaryotes, Unicellular: Protozoa, or protozoans, are single-celled, eukaryotic microorganisms Some protozoa are oval or spherical, others elongated Still others have different shapes at different stages of the life cycle
  • 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
  • Protozoans - GeeksforGeeks
    Protozoans are microscopic, single-celled eukaryotic organisms that belong to the Kingdom Protista They are capable of performing all essential life processes within a single cell despite their simple organisation Protozoans are widely distributed in aquatic and moist environments, where they may live freely or as parasites





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