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Kingdom Protista

Kingdom Protista. The Odds and Ends Kingdom. Characteristics of Protists. Eukaryotes Autotrophic, Heterotrophic or both Multicellular and Unicellular Reproduce sexually and asexually Live in moist surroundings Some can move some cannot. Three Groups of Protists.

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Kingdom Protista

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  1. Kingdom Protista The Odds and Ends Kingdom

  2. Characteristics of Protists • Eukaryotes • Autotrophic, Heterotrophic or both • Multicellular and Unicellular • Reproduce sexually and asexually • Live in moist surroundings • Some can move some cannot

  3. Three Groups of Protists • Scientists divide protists into categories based on characteristics they share with organisms in other kingdoms • Animal-Like protists • Plantlike protists • Funguslike protists

  4. Animal-Like Protists • Called animal like because • they are heterotrophs • they are able to move from place to place to obtain food • Another name for animal-like protists is Protozoans • Why not animals? • they are unicellular

  5. 4 groups of Animal-Like Protists • Grouped based on how they move and live • Protozoan with Pseudopods (false foot) • Protozoan with Cilia • Protozoan with Flagella • Protozoan that are parasites

  6. Protozoan with Pseudopods • Pseudopods means False Foot • Example is an Amoeba • a sarcodine that moves and eats through temporary bulges of the cell • Expels excess water with a contractile vacoule

  7. Protozoan with Cillia • Cillia-hair like projections from cells that move with wavelike motion • Example is a Paramecium • Has a large and a small nucleus • Reproduces both asexually through binary fission and sexually through conjugation

  8. Protozoan with Flagella • Flagella—whip like structure used to move • Live in symbiosis with other organisms • Sometimes helping host, sometimes hurting

  9. Protozoan that are Parasites • Feed on the cells and body fluids of a host • Plasmodium is a protozoan that has more than one host and causes malaria • Transferred by mosquitoes • Symptoms include high fevers that alternate with severe chills

  10. Plantlike Protists • Commonly called algae • Autotrophs • Multicellular and unicellular • Reproduce sexually and asexually

  11. Diatoms • Unicellular • Glasslike cell walls

  12. Dinoflagellates • Unicellular • Surrounded by stiff plates that look like a suit of armor • Variety of colors—many glow in the dark • Two flagella to move

  13. Euglenoids • Green, unicellular, found in freshwater • Autotrophs but can be heterotrophs when sunlight is not available • Has an eyespot and a flagellum

  14. Red Algae • Almost all are multicellular • Red pigment helps them grow deeper in the water • Used in products such as ice cream and hair conditioner • In Asian cultures it is eaten fresh, dried, or toasted

  15. Green Algae • Very diverse • Green pigments • Most unicellular—some form colonies and a few are multicellular • Most live in water, some on land Ulva Colony

  16. Brown Algae • Commonly called seaweed • Multicellular • Contain brown, yellow, green, and orange pigments • Bladders to float upright

  17. Funguslike Protists • Heterotrophs with cell walls • Use spores to reproduce • Able to move at some point in their lives • Three types • Slime molds—live in moist soil and decaying plants • Water molds and downy mildew—live in water and moist places

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