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Unicellular plants and animals
Kingdom Protista Unicellular plants and animals
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General Information Protista, from the Greek protistos = first
Diverse group Aka Algae & Protozoa Most are Unicellular exception: Volvox is colonial
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Characteristics A. Eukaryotic (have a nucleus)
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Characteristics B. Many feeding patterns some plant-like, (autotrophs)
some animal-like, (heterotrophs) some fungus-like(absorb food from the dead) some parasite-like (pathogens, eat the living)
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Characteristics C. Big or tiny D. Unicellular or colonial
E.Have weird features, like photosensitive areas (eyespots)
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3. Habitats Almost anywhere there is water
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4. Reproduction Asexual Sexual Both, alternating
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Ciliophora - Conjugation
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Reproduction Alternation of Generations
☯ switch btwn. asexual repro. (spores) & sexual repro. (gametes) & back again
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5. Specialized Cells Cells specialized for f(x)s Division of labor
E.g. holdfast cell, gamete-forming cells Holdfast cell
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6. Classification by Exclusion
✿ If organism doesn’t belong in any other phylum, put it in this one! I.e. Weirdos go in this group!
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7. Protist Groups Pseudopodia for locomotion = “false feet”
Animal-like, parasites AMOEBAS E.g. ★Amoeba E.g. Entamoeba histolytica (amoebic dysentary)
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7. Protist Groups b. Foraminifera Source of CaCO3
(calcium carbonate / chalk) E.g. The white cliffs of Dover
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7. Protist Groups c. Diatoms
Photosynthetic, unicellular, double shells of SiO3(glass)
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7. Protist Groups d. Green Algae plant-like protists E.g. ★Volvox
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7. Protist Groups e. Red Algae Source of agar
(growth medium for bacteria)
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8. Protist Groups f. Brown Algae E.g. kelp
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7. Protist Groups g. Dinoflagellates
Protists with Flagella (animal-like) Capable of bioluminescence (glowing in the dark) the red tide makes scallops toxic to humans
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Red (Crimson) Tide
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7. Protist Groups ✰Causes giardia / backpackers’ disease
✰Trichonympha in termites digest wood (cellulose)
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8. Protist Groups h. Euglenoids e.g. ★Euglena ★use flagella to move
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7. Protist Groups i. Cilia for locomotion -Ciliates) ★Paramecium
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7. Protist Groups j. Slime Molds Multicellular Single cellular
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7. Protist Groups k. Water Molds E.g. potato blight
Caused potato famine in Ireland 400,000 starved
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7. Protist Groups Cannot move themselves
l. ★Sporozoans Cannot move themselves Move via vectors (things that carry them)
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l. ★Sporozoans EXAMPLES: E.g. Plasmodium (causes malaria)
vector = Anopheles mosquito E.g. Toxoplasmolysis (from cat feces causes fetal death) E.g. African sleeping sickness vector = tsetse fly
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