Transcript Structure of Protists

Protista: The Kingdom of Protists
By Red Sammons
Michael McMillan
And Brett Andrews
Structure of Protists
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Most are Unicellular
Most are simple Eukaryotic structures
Some are multi-cellular but are very simple
Membrane bound organelles
Unicellular protists are specialized
Types of Protists
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Algal protists
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Fungal protists
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Plant like unicellular organisms
Slime molds
Characteristics of plants and animals
Protozoa
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Animal like unicellular organisms
Major Phyla & Species
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Protophyta: Euglenoids, Golden Algae, Fire
Algae
Gymnomycota: True slime molds
Protozoa: Sarcodines, Ciliates, Sporozoans,
Flagellates
Feeding
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Autotrophic and Heterotrophic, some are both
They live on animals or decaying materials
Euglenoids make their own food
Golden Algae and Dinoflagellates are
photosynthetic
All protozoans are heterotrophic
Reproduction
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Use both sexual and asexual reproduction
Golden Algae
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Diatoms conduct mitosis
multicellular algae life cycle
sporophyte
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gametophyte
Algal Protists
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Use flagella for movement
Three main types: Euglenoids, Pyrophytes,
Rhodophytes
All algal protists are aquatic
Uses sexual, not asexual reproduction
Seaweed is a form of algal protists
Slime Molds
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Fungus like organisms
Found in damp areas and decaying vegetation
Non-photosynthesizing
Cellular
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Independent, Haploid cells
Form a mass of individual cells (pseudoplasmodium)
Acellular
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Masses of cytoplasm (plasmodium)
Spread thinly over square meters
Protozoa
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Eukaryotic
Reproduce by mitosis
Sarcodines: Blob-like and asymmetrical amoebae
Two types of sarcodines (foraminifera, radiolaria) have hard shells
Flagellates: All possess a whip-like flagellum
These are propelled by the flagellum moving back and forth
Ciliate: Has a number of hair-like cilia on its surface
These propel the organisms by waving in a synchronous motion
Sporozoans: Have no organs for movement
Are very complex animals, many are parasites
Pictures of Protista
Diatom
Euglena
Algae
Fornifera
Diatom
Slime Mold
This slide show provides excellent information about Protists