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nounphotosynthetic or plant constituent of plankton; mainly unicellular algaetype of:
Definition that contains phytoplankton
- cyanobacteria predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
- blue-green algae predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton