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Protista
Green, Red, and Brown Algae,
Sporozoans, Water Molds,
Unicellular Flagellates
Jade Bryngelson
Green Algae
• Cholorophyta = “Green Plants”
• Dark to light green in color
• Contains
– Chlorophyll A
– Chlorophyll B
• Can be one celled or multicelled
• Both marine and freshwater algae
• Found in lighter abundant areas
• Difference
– Classified in plant (Plante) Kingdom
Green Algae Cont.
• 4,022 species
– Sea Lettuce
– Dead man’s fingers
• Uses
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Important food source for fish
Food coloring
Cancer treatments
Reduce Global Warming..?
Red Algae
• Rhodophyta = “Red Plants”
• Red or purplish in color
– Big variety of pigments
– Most important – phycoerithrin
• Provides red pigment
• Can be found deeper in the ocean because of
pigments
• Can be one-celled or multicelled
• Difference from other algae
– Cells lack flagella
Red Algae Cont.
• Commonly found in coral reefs
• 6,000 species
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Irish moss
Dulse
Lavor
Coralline
• Uses
– Eaten by fish and humans
• Some make sushi and pudding
– Food additives
– Treat herpes virus
Brown Algae
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Phaeophyta = “dusky plants”
Largest, most complex
Usually brown, olive, or yellow in color
Contains
– Chlorophyll A
– Chlorophyll C
– Fucoxanthin
• Often rooted to a stationary structure
– Rock, shell or dock = holdfast
Brown Algae Cont.
• Multicellular
• Marine
• 1,800 species
– Kelp
– Seaweeds
• Focus
• Sargassum
• Uses
– Fish and Food
Sporozoans
• Apicomplexa
• Parasites
• No physical form of
movement
• Complex life cycle
including:
– Mammalian host
– Invertebrate host
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• Mosquito
Animation
Unicellular Flagellates
• Move with the use of flagella
• May live as single cells or parasites
• Almost any watery area on
earth contains many flagellates
– Important to marine food chain
• Mix of features
• Some are plant-like, but
others can be mixed
• Life cycle unknown
Water Molds
• Oomycota = “Egg Fungi”
• Always found in wet environments
• Long considered fungi because:
– Produce fungi-like filaments
– Feed on decaying tissue (rotting logs, mulch)
• Differ from fungi:
– Cell wall made of cellulose instead of chitin
– Gene sequences are different
• Appear to come from brown algae which lost
its ability to photosynthesize
Water Molds Cont.
• Species
– Saprolegnia, Achyla
• Fish parasites
– Downy Mildews
• Damage grapes/other crops
– Phytophthora infestans
• Destroys potato crop
– Phytophthora ramorum
• Killing many oaks