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Protist

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Rhodophyta seaweed
Jonelle Weaver/The Image Bank/Getty Images
Definition: Protists are organisms in the kingdom Protista. These organisms are eukaryotes, meaning they are made up of single or multiple cells which all contain a nucleus enclosed by a membrane. The protists are a diverse group of eukaryotes that cannot be classified as animals, plants, or fungi. Organisms in the Protista kingdom include amoebae, red algae, dinoflagellates, diatoms, euglena and slime molds.
Also Known As: Protista
Examples:
One type of protist in the marine environment is Irish moss, which is a species of red algae.
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