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Unformatted text preview: genus Astasia. These colourless flagellates live only in water rich in organic materials such as the fluid in the puddles round cowsheds. They absorb the organic substances from their environment and use them as food, i.e. they feed saprophytically , although they may still be able to synthesize complex materials from relatively simple inorganic chemicals. They cannot, however, build up starch from carbon dioxide. Other colourless flagellates are able to take in solid particles of food material and digest them in a way described in the section dealing with Paramecium. This holozoic feeding is essentially an animal characteristic. The distinction between holozoic and holophytic feeding is the fundamental difference between animals and plants. Euglena gracilis reservoir pigment spot contractile vacuole flagellum chloroplast pyrenoid nucleus D.G. Mackean 65 cell membrane...
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This note was uploaded on 11/29/2011 for the course BIO 218 taught by Professor Young during the Fall '11 term at BYU.
- Fall '11