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Protists

Protists. The Junk Drawer Kingdom. Flip to ‘General Characteristics’. What is a protist?. This Kingdom is very diverse!! General characteristics Eukaryotic – Contains a nucleus Both Unicellular and Multicellular Both Heterotrophs and Autotrophs May or may not have a cell wall.

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Protists

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  1. Protists The Junk Drawer Kingdom

  2. Flip to ‘General Characteristics’

  3. What is a protist? This Kingdom is very diverse!! General characteristics • Eukaryotic – Contains a nucleus • Both Unicellular and Multicellular • Both Heterotrophs and Autotrophs • May or may not have a cell wall

  4. Organizing Diversity Protists are organized into three categories • Plant-Like Protists - Also called Algae • Animal-Like Protists - Also called Protozoans • Fungus-Like Protists

  5. Flip to ‘Animal-like Protists’

  6. Animal-Like Protists (Protozoans) • Cell Structure: No Cell Wall Unicellular • Classified Based on how they move and obtain food • Mode of nutrition: heterotrophs Separated into 4 Different Phylum

  7. Phylum Sarcodina - Sarcodines • Amoeboid Movement • Move and eat using pseudopods (False Foot) • Heterotrophs – Use food Vacuole

  8. Phylum Ciliophora - Ciliates Ex. Paramecium and Stentor • Move and eat using cilia – • Short hairlike projections, similar to flagella • Mostly freeliving – not parasitic

  9. Phylum Sporozoa - Sporozoans Ex. Plasmodium – Causes Malaria • Do not move on their own • Are parasitic

  10. Phylum Zoomastigina - Zooflagellates Ex. Trypanosoma – Causes African Sleeping Sickness Trichonympha – in digestive system of termites • Move using a flagella • Free living or parasitic

  11. Flip to ‘Plant-like Protists’

  12. Plant-Like Protists (Algae) • Cell Structure: All contain chlorophyll and Unicellular or Multicellular • Classified Based on Color (Accessory Pigments) • Mode of Nutrition: Autotrophs Separated into 6 Different Phylum

  13. Phylum Chlorophyta – The Green Algae *Ancestor to Modern Plants* Ex. Volvox and Spirogyra • Contain Chlorophyll A and B • Cellulose in Cell Wall • Used in cosmetics, paints, and food • Major Source of fish food and oxygen

  14. Phylum Rhodophyta – The Red Algae • Mostly Multicellular • Cholorphyll A & Red Pigment Phycobilins • Live at Great Depths • Used in ice cream & pudding

  15. Phylum Phaeophyta – The Brown Algae Ex. Brown Kelp • Multicellular • Contain Chlorophyll A &C • Largest Most Complex Algae Up to 60 Meters Long • Used in fertilizer and toothpaste

  16. Phylum Pyrrophyta - Dinoflagellates • ½ Autotrophs and ½ Heterotrophs • 2 Flagella – Can spin • Can be luminescent – “fire plants” • Cause of Red Tide- Produce neurotoxins Kills marine life

  17. Phylum Bacillariophyta - Diatoms **Most abundant organisms on earth • Unicellular • Autotrophs • Cell Walls of silicon like the main ingredient in glass

  18. Phylum Euglenophyta • 2 Flagella • No Cell Wall • Eye Spot to detect light • Autotrophs, but can be Heterotrophs when sun is not available

  19. Do not write these in foldable…

  20. Fungus-Like Protists • Cell structure: Unlike true fungus lack chitin in their cell wall and have centrioles • Mode of nutrition: Heterotrophs – decomposers • Damp, Moist Environments

  21. Phylum Acrasiomycota • Cellular Slime Mold • Unicellular but colonize

  22. Phylum Myxomycota • Acellular Slime Mold • Fuse together to become larger structure with multiple nuclei

  23. Phylum Oomycetes • Water Molds • Thrive in water • Plant parasites on land • Caused Potato Famine

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