phytoplankton

Noun
  1. Photosynthetic or plant constituent of plankton;
    Mainly unicellular algae (synset 101386537)
    is a type of: flora, plant, plant life - (botany) a living organism lacking the power of locomotion
    subtypes:
    • planktonic algae - unicellular algae
    • diatom - microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica
    belongs to: plankton - the aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water

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