LM of the marine diatom, Navicula sp.

LM of the marine diatom, Navicula sp.

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Credit: CLAUDE NURIDSANY & MARIE PERENNOU/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of the marine diatom, Navicula sp.. Diatoms are a distinct group of single- celled algae containing about 10,000 species. They form an important part of the plankton at the base of the marine and freshwater food chains. The characteristic feature of diatoms is their intricately patterned, glass-like cell wall, or frustule. The frustule consists of two halves which fit together like the lid and bottom of a box. It is often decorated with rows of tiny holes, known as striae, which are arranged either radially or, as here, on the two sides of a central axis. Magnification: x300 at 35mm size.

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Keywords: alga, algae, algal, botany, diatom, diatoms, light micrograph, nature, navicula, navicula sp., pennate, phytoplankton, plankton, plant, shape, type

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