1. PROTISTS CHAPTER 19

2. KINGDOM PROTISTA (most diverse kingdom) All are eukaryotic Unicellular or multi- cellular Microscopic or very large Heterotrophic or autotrophic Plant-like, animal-like or fungus-like

3. ORIGIN OF PROTISTS

4. ALGAE Plant-like protists Autotrophs Lack true leaves, roots and stems Most are aquatic Produce much of the earth’s oxygen Basis of the aquatic food chain

5. Spirogyra Volvox Mixed green algae

6. FUNGAL PROTISTS Unlike fungi, fungus-like protists are able to move and lack chitin in their cell walls. Decompose dead materials (saprobes) Make nutrients available to living organisms Slime molds

7. SLIME MOLD

8. PROTOZOA (singular: protozoan) Animal-like protists All are unicellular heterotrophs Move by means of cilia, flagella, pseudopodia Reproduce asexually (some sexually) Some are parasitic sporozoans

9. AMOEBAS Protozoans with pseudopodia “False foot” Extensions of cytoplasm Aid in movement & feeding Shapeless Most live in salt water Some have shells Foraminiferans radiolarians Most reproduce asexually Some form cysts Survive unfavorable conditions

11. FLAGELLATES Protozoans with one or more flagella Some are parasitic African Sleeping Sickness

12. CILIATES Protozoans with cilia Salt or fresh water Includes: Paramecium Vorticella Stentor

15. SPOROZOANS Parasitic protozoans Malaria Sleeping sickness Trichimonas Most produce spores Reproductive cell Produces a new organism Plasmodium (causes Malaria)

16. FUNGUS-LIKE PROTISTS Slime molds Grow on rotting leaves or decaying tree stumps & logs Water molds Live in water or moist places Appear as fuzzy, white growths Downy mildews Live in water or moist places Cause plant diseases

17. WATER MOLD

18. ALGAE Photosynthesizing protists Fresh or salt water Contain chlorophyll Produce more than half the earth’s oxygen Include: Red algae Green algae Brown algae Diatoms - contain silica Euglenoids Dinoflagellates DIATOMS

19. RED ALGAE BROWN ALGAE

20. DIATOMS

21. Dinoflagellates: known as “fire algae” (cause red tides)