The Blue-green Algae

The algae are not a group of related forms; in fact, various forms of alga are assigned to different kingdoms. Because they have no nuclei, the blue-green algae are assigned to the kingdom Monera. They are prokaryotic. Members of the three phyla Euglenophyta, Chrysophyta, and Pyrrophyta are assigned to the kingdom Protista because none of the members of these phyla are multicellular. Members of the phyla Chlorophyta, Rhodophyta, and Phaeophyta are assigned to the kingdom Plantae. These assignments have both positive and negative implications; they are also tentative.

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