Diatom frustule (centric), SEM

Diatom frustule (centric), SEM

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Caption: Coloured scanning electron micrograph (SEM) of marine centric diatom frustule (skeleton). This marine centric diatom is found in both brackish and salt water. Diatoms are a type of algae (Chromophyta, Bacillariophyceae). They consist of two valves, made of silica (hydrated silicon dioxide), which fit together like the top and bottom of a box. The exterior of the valves are often highly decorative, with pores, spikes or other types of projections. They are important alga in the marine food chain. Magnification: x900 when shortest axis printed at 25 millimetres.

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Keywords: 92554a, alga, algae, aquatic, bacillariophyta, centric, colored, coloured, coscinodiscophyceae, diatom, diatoms, eccentrica, electron, eukaryote, false-colored, false-coloured, frustule, frustules, marine, micrograph, pennate, phytoplankton, plankton, salt, saltwater, scanning, sea, sem, silica, skeleton, thalassiosira, thalassiosirales, thallassiosiraceae, water

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