Diatom alga, Coscinodiscus

Diatom alga, Coscinodiscus

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Caption: Light micrograph of the marine diatom Coscino- discus marginatus. The diatoms are a distinctive group of single-celled algae containing about 10,000 species. They form an important part of the plankton at the base of the marine & freshwater food chains. The characteristic feature of diatoms is their intricately patterned, glass-like cell wall, or frustule. The frustule consists of 2 halves which fit together like the lid & bottom of a box. The frustule is often decorated with rows of tiny holes, known as striae, which are arranged either radially (as here) or on 2 sides of a central axis. Magnification x400 at 35mm size

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Keywords: alga, algae, algal, botany, centric, circle, circular, coscinodiscus marginatus, diatom, diatoms, light micrograph, marine, nature, phytoplankton, plankton, plant

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