A general term for the protozoan class, the flagellates. This is the most primitive group of protozoa, and is a single-celled organism that always has one or several flagella during its life. They are broadly divided into phytoflagellates that have plastids (such as Euglena and Volvox) and zooflagellates that do not have plastids (such as Trypanosoma and Trichomonas). The former are often known as marine or freshwater plankton, and the latter as parasites. Phytoflagellates are also considered to be lower plants. Source : Heibonsha Encyclopedia About MyPedia Information |
原生動物鞭毛虫綱の総称。原生動物中最も原始的な群で,一生の間に必ず1〜数本の鞭毛をもつ単細胞生物。色素体をもつ植物性鞭毛虫類(ミドリムシやボルボックスなど)と,色素体をもたない動物性鞭毛虫類(トリパノソーマやトリコモナスなど)に大別され,前者は海産あるいは淡水産のプランクトン,後者は寄生虫として知られるものが多い。植物性鞭毛虫は下等植物としても扱われる。
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