Presentation on theme: "The “Catch All” Kingdom!"— Presentation transcript:
1 The “Catch All” Kingdom! Protista KingdomThe “Catch All” Kingdom!
2 Protista Characteristics Eukaryotic Organisms that are not members of the Plantae, Animalia, or Fungi kingdomsMost of them are unicellular but some are multicellularCell walls with cellulose in someSome have chloroplastsAutotrophs or heterotrophsAmoeba, Giant Kelp, Euglena
3 Protista Comes from the Greek words meaning “the very first” Protists were the first eukaryotic organisms on EarthThey are believed to appear 1.5 billion years agoHypothesized from Lynn Margulis that they evolved from a symbiosis of several cells.
4 Classification of Protists Incredibly diverseDifferent groups of protists that are an artificial way to organize a diverse groupThe groups are based on the way food is obtained, not the evolutionary history
5 Animallike Protists: Protozoans “First animals”HeterotrophsFour phyla are based on movement meansZooflagellates swim with flagellaSarcodines move by extensions of their cytoplasm called pseudopodsCiliates move by ciliaSporozoans do not move at all on their own
6 DiseasesZooflagellates of the genus Trypanosoma cause African sleeping sicknessThe tsetse fly is the method of spreading the infection from person to personDamage to blood cells and tissue infection occursFatal sleep results
7 Diseases Entamoeba is a parasite that causes amebic dysentery in areas with poorsanitationIt lives in the intestines, absorbs food, and causes severe bleeding in the hostPassed out in the feces and make their way to water
8 Diseases Dysentery can occur even in clear streams Caused by the pathogen, GiardiaCauses diarrhea and digestive problemsDon’t drink water that isn’t cleanDon’t eat withoutwashing hands afterusing the restroom
12 Plantlike ProtistsContain green pigments, chlorophyl and photosynthesizeCommonly called “algae”4 unicellular phylaEuglenophytes-two flagella, no cell wallChrysophytes-gold color chloroplastsDiatoms-produce silicon in their cell walls (glass)Dinoflagellates-half photosynthesize, half consumers
13 Plantlike Protists 3 multicelluar phyla Red algae-able to live deep in water due to efficiency in harvesting light energy (phycobilins and chlorophyll a)Brown algae-chlorophyll a and c and fucoxanthin)Green algae-similar to plants pigments and cell wallThe biggest difference is their photosynthetic pigments
14 Ecology of Unicellular Algae Plantlike protists play a major ecological role on EarthWhat would happen if they disappeared?
15 Algal Blooms And The Water Turns to Blood Protists grow rapidly when sewage is dischargedThey recycle sewage and waste materialWhen waste is excessive, euglenophytes and other algae “bloom”This can rob water of oxygen, choke fish and invertebrates
16 Great BloomsRed Tides can be dangerous if shellfish is ingested by humans and contaminatedMay result in illness, paralysis, and death in humans and fish
20 Reproduction of Green Algae The life cycles of many algae include both a diploid and haploid generation called the alteration of generations
21 Uses of Algae Major food source for life in the oceans Base of the food chainKelp provides shelter for many speciesProvides half of the world’s oxygenVitamin C and Iron SourceHelps treat ulcers, high blood pressure, arthritisFood source (ice cream, pudding, salad dressing, syrup, candy, eggnog)Chemicals (plastics, paints, waxes, deodorants)Agar
22 Funguslike ProtistsHeterotrophs that absorb nutrients from dead or decaying organic matterCentriolesLack chitin cell walls of true fungi
23 Ecology of Funguslike Protists Slime molds and water molds are important recyclers of organic material, help the rotting processAlso cause diseases of plantsThe Great Potato Famine—conditions?
24 Quick Assessment Animallike protists that swim use . They are referred to as .Sarcodines use to move and feed.Ciliophora use to move and feed.Euglenophytes are plantlike protists that have flagella.Diatoms contain in their cell wall.Red algae can live .
25 Assessment Continued9. Thelife cycles of most algae include both a diploid and haploid generation called Funguslike protists get their nutrients from .