The larger order of peritrichia are the Sessilida. Most of these have modified posterior kinetosomes which secrete a contractile stalk. The unattached stage, called a telotroch, is mouthless. These are common in both freshwater and marine environments, and many live attached to aquatic plants and animals. They are either solitary or produce branch...
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http://en.wikipedia.org/wiki/Peritrich
any ciliated vase-shaped protozoan of the order Peritrichida (more than 1,000 species), found in both fresh and salt water. Usually nonmotile ... [1 related articles]
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http://www.britannica.com/eb/a-z/p/45
peritrich 1. Any of various protozoans, such as the vorticella, having a wide oral opening surrounded by cilia. 2. Any ciliate protozoan of the subclass Peritrichia.
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http://www.wordinfo.info/words/index/info/view_unit/1610/17
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