Voticella protozoan, light micrograph

Voticella protozoan, light micrograph

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Credit: MAREK MIS/SCIENCE PHOTO LIBRARY

Caption: Polarised light micrograph of a Vorticella sp. peritrich ciliate protozoan. Rows of cilia (microscopic hairs) and an undulating membrane create a current of water which directs food towards the buccal cavity (mouth opening, upper left). Vorticella are sessile, meaning they attach to a surface and cannot move around on their own. When disturbed, they contract their stalk into a tight coil. This contraction is one of the fastest known actions in the animal kingdom. Magnification: x670 when printed 10 centimetres tall.

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Keywords: animal, aquatic, biology, cilia, ciliate, fauna, grey background, invertebrate, light micrograph, light microscope, microbiological, microbiology, microorganism, microscopic, microscopy, nature, no-one, nobody, peritrich, polarised light micrograph, pond life, protist, protozoan, single-celled, single-celled organism, unicellular, vorticella, wildlife, zoological, zoology

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