Phytoplankton are the autotrophic components of the plankton community and a key factor of oceans, seas and freshwater basins ecosystems. The name comes from the Greek words φυτόν, meaning "plant", and πλαγκτός, meaning "wanderer" or "drifter".
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Phytoplanktons are present under sea and they are plants which are microscopic and they are feeded on by small zooplanktons.
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Its a photosynthesizing organisms in found in plankton , it is mainly unicellular algea and cyanobacteria.
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