1. Kingdom Protista! Biology 11

2. Kingdom Protista Greek “protos” = first Plants, animals and fungi likely evolved from protist ancestors. “The diversity of protists represents the different experiments in the evolution of eukaryotic organization” -Campbell

3. “No more pleasant sight has met my eye than this of so many thousands of living creatures in one small drop of water.” -Anton von Leauwenhoek

4. 3 Main Groups Algae (plant-like) Protozoans (animal-like) Slime molds (fungus-like)

5. General Characteristics: Protists vary in morphology & lifestyle more than any other group of organisms! Therefore they are a difficult kingdom to describe.

6. General characteristics continued… All are eukaryotes Most are aquatic All are aerobic Most are unicellular Some are heterotrophs / some autotrophs (photosynthetic)

7. Q: Can protists cause disease? A: Yes, some are pathogenic. –Plasmodium  Malaria –Amoeba  Dysentery –Trypanosoma  Sleeping sickness

8. General characteristics continued… Some capable of locomotion (protozoans) Asexual & Sexual reproduction Size varies greatly! ~0.01 mm (single celled algae) ~65 m (giant kelp)

9. Algae Photosynthetic autotrophs Very important to aquatic food webs Classified based on colour and structure –Golden algae (includes diatoms) –Green algae –Red algae –Brown algae (includes kelp) –Euglenoids

10. Protozoans Unicellular Most capable of locomotion Heterotrophs

11. Protozoans continued… Classified based on structure and method of locomotion –Mastigophora (aka. Flagellates) Most are parasites and cause disease –Ciliophora Includes paramecium –Sarcodina (aka. rhizopods) Includes the Amoebas –Sporozoa Not capable of locomotion

12. Review / Summary Kingdom Protista – Concept Map Kingdom Protista Video – Kingdom Protista Video Password - 488KCH

13. Diatoms (Golden Algae)

14. Giant Kelp

15. Ciliates

16. Euglena

17. Amoeba