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algae, ,, Nora Alsuhaim - Fahda Alajlan - Coggle Diagram
algae
Dinoflagellates
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Predominantly unicellular, with two flagella at right angles to one another, causing the dinoflagellate to spin as it moves.
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Some are autotrophic, some are heterotrophic
Some are bioluminescent, meaning they emit light
Diatoms
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They store food as oil, making them a nutritious food source and buoyant in water.
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Dinoflagellates
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Red tides can be a serious threat to humans and the ecosystem because the dinoflagellate involved produces a toxin.
The toxin is ingested by shellfish, which are then ingested by humans.
The ecosystem is affected through reduced light penetration, toxin levels, and reduction in primary producers to the food web.
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Phylum Bacillariophyta
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They store food as oil, making them a nutritious food source and buoyant in water.
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Euglenoids
Phylum Euglenophyta, euglenoids, are unicellular plantlike protists.
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Most euglenoids photosynthesize, but do not have a cell wall; they can also be heterotrophs.
Chrysophytes
chrysophytes, are yellow-green or golden-brown algae.
Most are unicellular, but some are colonial.
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Brown algae
Phylum Phaeophyta contain the brown algae, some of the largest and most plantlike multicellular algae.
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Green algae
Can be unicellular, multicellular, or colonial
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