How do most unicellular protists reproduce?
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Are protists unicellular or mulitcellular?
Protists include unicellular, colonial and multicellular organisms Most protists are unicellular although (only one group) can be multicellular. There are types of algae, green algae known as Ulva, that are multicellular protists. They begin as colonies of unicellular protists known as Volvax, but the ones that break away are the multicellular version. The multicellular protists are without any specialized tissues. Protists used to be considered soley unicellular. Now that the molecular information has been redifined, protists are both unicellular and multicellular. .