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The Odds and Ends Kingdom
Kingdom Protista The Odds and Ends Kingdom
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Characteristics of Protists
Eukaryotes Autotrophic, Heterotrophic or both Multicellular and Unicellular Reproduce sexually and asexually Live in moist surroundings Some can move some cannot
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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
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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
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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
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Protozoan with Pseudopods
Pseudopods means False Foot Example is an Amoeba
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Protozoan with Cillia Cillia-hair like projections from cells that move with wavelike motion Example is a Paramecium Reproduces both asexually through binary fission and sexually through conjugation
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Protozoan with Flagella
Flagella—whip like structure used to move Live in symbiosis with other organisms Sometimes helping host, sometimes hurting
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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
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Plantlike Protists Commonly called algae Autotrophs
Multicellular and unicellular Reproduce sexually and asexually
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Diatoms Unicellular Glasslike cell walls
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Dinoflagellates Unicellular Variety of colors—many glow in the dark
Two flagella to move
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Euglenoids Green, unicellular, found in freshwater
Autotrophs but can be heterotrophs when sunlight is not available Has an eyespot and a flagellum
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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
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Green Algae Ulva Colony Very diverse Green pigments
Most unicellular—some form colonies and a few are multicellular Most live in water, some on land Ulva Colony
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Brown Algae Commonly called seaweed Multicellular
Contain brown, yellow, green, and orange pigments Bladders to float upright
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Funguslike Protists Heterotrophs with cell walls
Use spores to reproduce 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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