1. Kingdom Protista

2. What is a Protist? It is the most diverse kingdom (200,000+ species)
Contains both unicellular and multicellular organisms
Contains both autotrophs and heterotrophs

3. Protozoans: Animal-like Protists
Are all unicellular heterotrophs
Are classified by their movement
Ciliophora includes paramecia

4. Ciliophora
Move and feed using cilia = hairlike projections of the plasma membrane
Paramecia in freshwater use contractile vacuoles to regulate water balance

6. Protozoans Zoomasitgina or “flagellates”
Move by whipping 1 or more flagella
Example:
Trichonympha

7. Protozoans Rhizopoda includes amoeba
Move and feed using pseudopods = cytoplasmic extensions

8. Protozoans Sporozoa “sporozoans” All are parasitic and nonmotile
Example: Plasmodium causes malaria

9. Algae: Plant-like Protists
Are classified by photosynthetic pigment and cell wall structure
Produce more than 2/3 of all oxygen
Include phytoplankton = photosynthesizing protists

10. Algae Euglenophyta includes euglena Move by using a flagellum
Are both autotrophic and heterotrophic (mixotrophic)
Use an eyespot to find light

11. Algae Bacillariophyta “golden algae” ex. diatoms
Have shells made of silica

12. Algae Dinoflagellata “dinoflagellates” Several species produce toxins
Ex. Pfiesteria and red tide

13. Algae Phaeophyta “brown algae”
Kelp is the largest and most complex protist

14. Algae Rhodophyta “red algae” Found deep rocky waters
Used as a thickener “alginate”

15. Algae Chlorophyta “green algae”
Contains both uni- and multicellular forms
Volvox forms colonies

16. Green Algae Are considered the ancestors to plants:
Pigment: chlorophyll
Cell wall: cellulose
Life cycle: alternation of generations

17. Alternation of Generations

18. Fungus-like Protists Feed on decaying matter Slime molds Water molds
Downy mildews