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Protozoa   Listen
noun
Protozoa  n. pl.  (Zool.) The lowest of the grand divisions of the animal kingdom. 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 Vorticellae. 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, Gregarinae, and Infusoria. See also Foraminifera, Heliozoa, Protoplasta, Radiolaria, Flagellata, Ciliata.






Collaborative International Dictionary of English 0.48








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"Protozoa" Quotes from Famous Books



... question, whether the members of each group may not be mere varieties of one species—and which speculates steadily in the direction of the ultimate unity of matter, of a sort of prototype or simple element which may be to the ordinary species of matter what the Protozoa or what the component cells of an organism are to the higher sorts of animals and plants—the mind of such an age cannot be expected to let the old belief about species pass unquestioned. It will raise the question, how the ...
— Darwiniana - Essays and Reviews Pertaining to Darwinism • Asa Gray



Words linked to "Protozoa" :   class Ciliophora, Sarcodina, kingdom Protoctista, Mastigophora, Flagellata, class Flagellata, class Ciliata, class Sporozoa, Ciliophora, Protoctista



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