Single-celled desmid, Closterium

Single-celled desmid, Closterium

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Credit: R.B. TAYLOR/SCIENCE PHOTO LIBRARY.

Caption: Light micrograph (Spectral-Rheinberg contrast enhancement technique) of a single desmid of genus Closterium. The term desmids is applied to a group of genera of green algae that show great morphological variety but are related by common features of cell structure and method of reproduction. Most desmids are unicellular, with a single nucleus and 1 or more chloroplasts (the site of photosynthesis within the cell). The cell walls all have a inner layer rich in cellulose & an outer, thickened pectin layer. Magnification: X 400 at 35mm size. Photgraphed through microscope fitted with X40 semi- plan objective and a X10 wide field semi-

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Keywords: alga, algae, algal, botany, closterium sp., desmid, green, light micrograph, nature, plant, spectral-rheinberg contrast

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