1. Kingdom Protista Fidgety little critters!

2. Protista

3. What is a Protist? Eukaryotic Eukaryotic –Has a nucleus! Mostly single celled Mostly single celled Classified by: Classified by: –MOVEMENT MOVEMENT –OBTAIN FOOD OBTAIN FOODOBTAIN FOOD Animal-like: Animal-like: –Heterotrophic Plant-like: Plant-like: –Autotrophic (have chloroplasts) Fungus-like: Fungus-like: –Parasitic/Decomposers –REPRODUCE REPRODUCE

4. Protozoa = animal like protista EX: Paramecium EX: Paramecium Single-celled heterotrophs that can move Single-celled heterotrophs that can move

5. Animal-like Protists: Sarcodinia Movement: Movement: –By pseudopods: Little blobs of cytoplasm Little blobs of cytoplasm Means “Fake Feet” Means “Fake Feet” Consumer Nutrition: Consumer Nutrition: –Surround meal and bring into food vacuole Phagocytosis! Phagocytosis! Reproduction: Reproduction: –Binary Fission Organism: Organism: –Amoeba amoeba

6. Animal-like Protists: Ciliates Movement: Movement: –By cilia: Little “hairs” that beat like oars Little “hairs” that beat like oars Consumer Nutrition: Consumer Nutrition: –Food is swept in by cilia to GULLET –Contractile vacuoles collect and “spit out” water Reproduction: Reproduction: –Binary fission AND conjugation Organism: Organism: –Paramecium caudatum, Stentor coeruleus, Blepharisma

7. Mouth Gullet Cilia Contractile Vacuole Food Vacuole Stentor

8. Paramecium Use an oral groove (mouth) to obtain food. Use an oral groove (mouth) to obtain food. Contractile vacuole is used to pump out water Contractile vacuole is used to pump out water Food vacuole – storage pocket for food (like a stomach) Food vacuole – storage pocket for food (like a stomach) Anal Pore – disposes of waste Anal Pore – disposes of waste Pellicle – membrane covering that protects the paramecium (like skin) Pellicle – membrane covering that protects the paramecium (like skin)

10. Plant-like Protists: Flagellates (Volvox) No roots, stems, or leaves No roots, stems, or leaves Colonial organism: Colonial organism: –Hundreds of individual cells “live” together Movement: Movement: –Long, whip-like flagella –Whole colony moves together! Nutrition: Nutrition: –Autotrophic - photosynthesis –Contain chloroplasts! (Hence green color!) Reproduction: Reproduction: –Binary fission

11. Volvox

12. Euglenophytes: The plant-like animal protist NO CELL WALL: NO CELL WALL: –Has pellicle (skin like) MOVEMENT: MOVEMENT: –TWO flagella NUTRITION: NUTRITION: –Autotrophic (chloroplasts) –Can be heterotrophic when no sunlight! –Red spot helps organism to find sunlight REPRODUCTION: REPRODUCTION: –By binary fission ORGANISM: ORGANISM: –Euglena

13. Also called eyespot

14. Diatoms – plant like Protista Unicellular Unicellular Glass-like Glass-like Cell wall containing silica Cell wall containing silica

15. Spirogyra – plant like Contains chloroplast in a spiral setting Contains chloroplast in a spiral setting Green algae Green algae Most of the interior cell is a large central vacuole Most of the interior cell is a large central vacuole Reproduce asexually through fragmentation or sexually through conjugation Reproduce asexually through fragmentation or sexually through conjugation

16. Seaweed Large, multicellular marine algae Large, multicellular marine algae Photosynthetic Photosynthetic Can be red, brown or green Can be red, brown or green Can be 100’s feet long Can be 100’s feet long

17. Fungus-like Protista – decompose organic matter Slime molds and water molds are fungus like Slime molds and water molds are fungus like –Slime molds are both fungus like and animal like Decompose like fungus Decompose like fungus Can move like animals Can move like animals

18. Slime molds can be plasmodial or cellular Plasmodial slime molds are giant cells with many nuclei Plasmodial slime molds are giant cells with many nuclei Cellular slime molds contain independent cells Cellular slime molds contain independent cells