Chapter 25

Chapter 25 - Interactions Protists may be free-living or...

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Chapter 25 (Protists) Sizes of Protists Unicellular organisms (microscopic) Colonies (loosely connected groups of cells) Coenocytes (multinucleate masses of cytoplasm) Multicellular organisms (composed of many cells) Locomotion Pseudopodia Flagella Cilia Some are nonmotile Nutrition Protists obtain their nutrients autotrophically or heterotrophically, some do both.
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Unformatted text preview: Interactions Protists may be free-living or symbiotic Symbiotic relationships range from mutualism to parasitism Habitats Most protists live in Ocean Freshwater ponds Lakes Streams Parasitic protists live in body fluids of hosts Reproduction Many protists reproduce both sexually and asexually Others reproduce only asexually...
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