Paramecium bursaria protozoan, micrograph

Paramecium bursaria protozoan, micrograph

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Credit: LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

Caption: Paramecium bursaria protozoan, light micrograph. This ciliate protozoan inhabits freshwater, where it feeds mainly on bacteria. It moves by beating its cilia, hair-like extensions that cover its body. The small green bodies inside the protozoan are individual Zoochlorella sp. algae, which have a symbiotic relationship with the protozoan. They photosynthesise inside the Paramecium, providing it with sugars and oxygen, while deriving protection from their host. Darkfield illumination. Magnification: x510 when printed 10cm wide.

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Keywords: alga, algae, animal, biological, biology, cilia, ciliate, cilium, darkfield illumination, endosymbiont, fauna, freshwater, internal, invertebrate, invertebrates, light micrograph, light microscope, micro-organism, microbiological, microbiology, nature, one, paramecium bursaria, photosynthetic, protozoa, protozoan, single, single-celled, symbiosis, symbiotic, unicellular, wildlife, zoochlorella, zoological, zoology

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