Diatom algae among phytoplankton

Diatom algae among phytoplankton

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Caption: Diatoms. Light micrograph of assorted phytoplankton with prominent diatoms. The diatoms (blue, centre right) are rod-shaped (pennate) unicellular organisms which have formed a colony of eight individuals. They are surrounded by filamentous algae (purple helices) and unicellular algae (individual purple cells). Diatoms are unique in possessing a glass-like cell wall, or frustule, made from siliceous compounds. Diatoms form an important part of the floating plankton in the marine and freshwater food chains. Phase contrast. Magnification: x100 at 35mm size.

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Keywords: alga, algae, algal, botany, diatom, diatoms, filamentous algae, frustule, in phytoplankton, nature, pennate, phytoplankt, phytoplankton, phytoplankyon, plankton, plant, shape

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