2. Kingdom Protista  Protozoa: the animal like protists  Algae: plantlike (autotrophic)  Slime molds and water molds

3. Rise of the Eukaryotes Oxygen became a larger part of the atmosphere Selective pressure to be able to use it or at least tolerate it Eukaryotes developed Protists today are a lot like these early eukaryotes

5. Not Bacteria! Have a nucleus, large ribosomes, mitochondria, ER, golgi apparatus DNA is in chromosome form Undergo mitosis or meiosis (or both)

6. Protozoa  Single celled  Eukaryotes  Heterotrophic  Very diverse  Hard to classify

7. Classification of Protozoa  60,000 species described  Means of locomotion is traditional basis for classification  Locomotion is not phylogenic

8. Major Phyla of Protozoa

9. Phylum Mastigophora  flagellates  Includes some with chlorophyll  Examples: Trypanosoma Giardia Trichomonas

10. Trypanosoma African Sleeping Sickness Giardia lamblia severe diarrhea

11. Phylum Sarcodina  Pseudopodia  Amoeba-many types  Rarely free in water; need surface on which to crawl  Also includes radiolarians and foraminiferans

12. Phylum Sarcodina Amoeba

13. Phylum Sarcodina RadiolariansRadiolarians Radiolarians Glass like exoskeletons Foraminiferans Shells of calcium carbonate Shells contribute to formation of chalk and limestone

14. Phylum Euglenophyta Euglenoids: flagellated Most photosynthetic Some heterotrophs

15. Alveolates

16. Phylum Apicomplexa  All endoparasites  Spore producing  Class Sporozoa Toxoplasma-cats toxoplasmosis Plasmodium- malaria

17. Phylum Ciliophora  Locomotion is cilia  Always multinucleated  Examples include paramecium and stentor

18. Phylum Pyrrhophyta Dinoflagellates Causes “red tide” when they are overproduced Produce a neurotoxin that may affect muscles of marine life

19. Algae: Plant-like Protists Largely photosynthetic Phytoplankton is most popular place to find them Basis of almost all food webs in aquatic habitats

20. Major Algae Groups Chrysophyta Rhodophyta Phaeophyta Chlorophyta

21. Major Algae Groups Chrysophyta: diatoms with silica shells, golden algae, yellow- green algae.

22. Major Algae Groups Rhodophyta: red algae Mostly marine Many accessory pigments, such as phycobilins absorb green and blue-green light waves Can live deeper Agar, sushi

23. Major Algae Groups Phaeophyta: brown algae Evident on rocky coastlines Often found in big masses in ocean Giant kelps, sargassum Used in commercial products, including ice cream

24. Major Algae Groups Chlorophyta: green algae Most like plants Chlorophyll a and b Store carbohydrates as starch Wide variety