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Kingdom Protista

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Chapter 20 Diversity is the Key What is a protist? Unicellular Eukaryotic Classified into 3 general categories Animal like Plant like Fungus like *Based on mode ... – PowerPoint PPT presentation

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Title: Kingdom Protista


1
Kingdom Protista
  • Chapter 20
  • Diversity is the Key

2
What is a protist?
  • Unicellular
  • Eukaryotic
  • Classified into 3 general categories
  • Animal like
  • Plant like
  • Fungus like
  • Based on mode of metabolism

3
Animal Like Protists
  • Classified by movement
  • Zooflagellates
  • Sarcodines
  • Ciliates
  • Sporozoans

4
Zoomastigina
  • Euglena, Trypanasoma
  • Flagellates move by using a whip like tail
  • Have red pigmented eyespot for detecting light

5
Sarcodina
  • Amoeba proteus
  • Move and eat using psuedopods
  • Flexible and active
  • Fresh and Salt Water

6
Ciliophora
  • Paramecium/Vorticella
  • Move by using cilia
  • Macronucleus-day to day
  • Micronucleus-chromosomes and DNA
  • Stentor to the right?
  • Fresh and Salt Water
  • Contractile Vacuoles to remove water

7
Sporozoa
  • Plasmodium
  • Reproduce using spores
  • Parasites, carried by insects
  • Plasmodium causes malaria

8
Plant Like Protists
  • Classified by color
  • Diatoms
  • Dinoflagellates
  • Red Algea
  • Brown Algea
  • Green Algea

9
Bacillariophyta
  • Diatoms
  • Contain carotenoids for their gold pigments
  • Have geometric shells that are cell walls made of
    silica
  • Marine and Freshwater
  • Many Uses (glass,toothpaste, soil component)

10
Pyrrophyta
  • Dinoflagellates
  • Double flagella
  • Can secrete toxins in Red Tide (found in
    shellfish)
  • Not all toxic, give off light

11
Rhodophyta
  • Red Algae
  • Absorbs blue wavelengths of light allowing them
    to live deeper in the water column
  • Helps build coral reefs

12
Phaeophyta
  • Brown algae/Kelp
  • Largest of the algae
  • Can grow up to 60 m
  • Closely related to land plants in structure
  • Mostly marine

13
Giant Kelp
14
Chlorophyta
  • Volvox, Ulva
  • Most numerous of all plantlike protists
  • Fresh and marine water, green algae
  • Most attach to rocks
  • Ulva shown to the right?

15
Fungus Like Protists
  • Classified by reproduction
  • Cellular Slime Molds
  • Acellular Slime Molds
  • Water Molds

16
Acrasiomycota
  • Cellular Slime Molds
  • Move like amoeba
  • Reproduce with spores from fruiting body and
    undergo cell division?
  • When food runs out, spores are released

17
Myxomycota
  • Plasmodial Slime Molds
  • Considered a giant bag of cytoplasm with many
    nuclei
  • Reproduce by spores from sporangia
  • Extend vein like structures to absorb decaying
    food
  • Can grow several meters

18
Oomycota
  • Water molds and downy mildews
  • Saprophytic or Parasitic
  • Thrive on detritus in the water
  • Make hyphae or thin filaments ?
  • Alternate b/t sexual and asexual reproduction
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