1. 1 Review Give three examples of photosynthetic protists Predict How would ocean food chains change in the absence of photosynthetic protists 2 Explain By what two methods do parasitic protists primarily spread disease Form an Opinion Why are protist caused disease more widespread in tropical areas of the world.

2. 21.3 The Ecology of Protists
Ch 21 Protists and Fungi
21.3 The Ecology of Protists

3. Autotrophic Protists Phytoplankton Red and brown algae Euglena
Dinoflagellates.

4. Base of many aquatic food chains
Half of Earth’s photosynthesis is carried out by phytoplankton
Phytoplankton feeds both shrimp and some whales.

5. Provide coral reefs with energy and also calcium carbonate
Brown kelp can grow up to 60 meters
Can create “algae blooms”
Red tide.

6. Heterotrophic Protists

7. Amoebas
Surround a cell or particle and take it inside themselves to form a food vacuole
Food vacuole
Small cavity in the cytoplasm that temporarily stores food
Materials are digested and nutrients removed
Wastes stay in and food vacuole brings to edge of cell.

8. Ciliates Use cilia to sweep food particles into gullet Gullet
Indentation in one side of the organism
Particles are forced into food vacuoles that form at base.

9. Food vacuoles pinch off into cytoplasm and fuse with lysosomes
Waste materials are emptied when the food vacuole fuses with the anal pore.

10. Slime Molds Key roles in recycling nutrients in an ecosystem
Uses decaying organic material.

11. Slime Molds
Amoeba like cells.

12. Forms together into a large structure known as a plasmodium.

13. Plasmodium develops sporangia
Meiosis produces haploid spores to continue the cycle inside.

14. Mutualistic Protists
Trichonympha and termites.

15. Parasites and Disease
Debilitating intestinal diseases, African sleeping sickness, and malaria.

16. Intestinal Diseases Giardia Amebic dysentery Cryptosporidium
Diarrhea causing found in streams
Amebic dysentery
Cryptosporidium
Chlorine resistant, found in city water
African Sleeping Sickness
Trypanosoma carried by Tsetse fly.

17. Malaria
Plasmodium carried by Anopheles mosquito.