Diatom alga, Cyclotella

Diatom alga, Cyclotella

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Caption: Scanning electron micrograph (SEM) of the centric, brackish water diatom Cyclotella meneghiniana. Diatoms are a type of single-celled algae distinguished by an intricate, glassy, silica- based cell wall or frustule. The frustule consists of two valves, which fit together like the halves of a box; one valve is slightly larger than the other & acts as the "lid". The micrograph shows one valve, & the surrounding girdle band which binds it to the other valve. When diatoms divide, each valve produces a new half inside itself. Diatoms are an important component of the marine & freshwater plankton. Magnification: x950 at 35mm size, x7500 at print size. Reference: MICROCOSMOS, figure 5.29. page 103.

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Keywords: alga, algae, algal, botany, cyclotella meneghiniani, diatom, diatoms, nature, phytoplankton, plankton, plant, scanning electron micrograph, sem

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