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Diatom. Coloured scanning electron micrograph (SEM) of a Triceratium sp. diatom. Diatoms are single-celled photosynthetic algae, of which there are about 100,000 species. They have mineralised cell walls (frustules) that contain silica and provide protection and support. The diatoms form an important part of the plankton at the base of the marine and freshwater food chains.
May 6th, 2013
Viewed 12 Times - Last Visitor from Leibsdorf, 02 - Austria on 11/26/2014 at 3:31 AM
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