Ecological Roles of Protists 21.3 http://www.bing.com/images/search?q=algae&qpvt=algae&FORM=IGRE#view=detail&id=1C5F87CADB61E1E2EBCD8CCEE5A76E44A11F45B3&selectedIndex=17
The position of photosynthetic protists at the base of the food chain makes much of the diversity of aquatic life possible
Roles p. 611 • Feeding fish and whales • Supporting coral reefs • Providing shelter • Recycling wastes • POPCORN READ!
Heterotrophic protists • Amoebas • Capture and digest their food, surrounding a cell or particle and form a FOOD VACUOLE • A small cavity in the cytoplasm that temporarily stores food
Ciliates Paramecium • Use cilia to sweep food particles into the GULLET • Indentation in one side of the organism
Slime Molds • Thrives on decaying matter • Damp and rich in organic matter (forest floor) • Great recyclers • What is a plasmodium (glossary)?
Protists that absorb • Water molds (grow on dead/ decaying matter) • White fuzz on fish
Mutualists/ Symbiotic • Many protists are involved in mutualistic symbioses; host and they benefit • Use p. 614 and write an example like this in your notes
Parasites and Disease • Parasitic protists are responsible for some of the world’s most deadly diseases, including several kinds of debilitating intestinal diseases, African sleeping sickness and malaria • Read (p. 615-616) about each of the above three diseases and write down their symptoms • Be able to interpret the Plasmodium life cycle on p. 616