blue-green algae

Definitions of blue-green algae
  1. noun
    predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
    synonyms: cyanobacteria
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    types:
    nostoc
    found in moist places as rounded jellylike colonies
    trichodesmium
    large colonial bacterium common in tropical open-ocean waters; important in carbon and nitrogen fixation
    type of:
    eubacteria, eubacterium, true bacteria
    a large group of bacteria having rigid cell walls; motile types have flagella
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