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Kingdom Protista
- •Kind of a “catch-all” kingdom for unusual, simple organisms but COMPLEX CELLS
- •Live just about everywhere
- •There are heterotrophic types and autotrophic types
- •The only common thing to say is they are all EUKARYOTIC
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4 groups of Protista
- • Protozoans
- • Slime molds
- • Unicellular algae
- • Multicellular algae (seaweeds)
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4 types of protozoans
- Flagellates - most are free-living, some are parasitic: Giardia, Trypanosoma (Sleeping sickness)
- Amoebas - extreme flexibility, BLOB, Lack of permanent locomotor organelles
- Apicomplexans - All parasitic: Plasmodium apicomplexan causes malaria
- Ciliates - use cillia to move, aquatic environments: Paramecium
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2 types of slime molds
- Plasmodial Slime Molds – one mass of multinucleated cytoplasm
- Cellular Slime Mold - very unique organism:
- Dictyostelium
- unicellular organism – amoeboid, lives on bacteria, slug-like colony
- needs to move for food, cells congregate and crawl away
- reproductive structure – where spores are released that are resistant to adverse
- conditions. Single cells develop from the spores
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2 types of Algae unicellular
- Dinoflagellates:
- Pyrrhophyta
- most are photosynthetic (autotrophic) Responsible for“redtides”–proliferate and produce a neurotoxin that kills fish and marine life, dangerous to eat that marine life.
- Diatoms:
- Chrysophyta
- Unique glassy cell wall composed of silica
- Form diatomaceous earth at the bottom of the ocean
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3 types of GREEN PROTISTS (division Chlorophyta)
Believed to be the group that higher plants arose from
- Chlorella
- Spyrogyra
- Volvox, example of COLONY,many single cells living together
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3 types of Algae Multicellular: “Seaweeds”
- Chlorophyta (green algae),
- Phaeophyta (brown algae),
- Rhodophyta (red algae),
Often display the higher organismal trait of ALTERNATION of GENERATIONS
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