Credit: ROLAND GROSS/SCIENCE PHOTO LIBRARY

Caption: Stentor polymorphus. Light microscope footage of a pair of green stentor (Stentor polymorphus). This species of freshwater ciliate protozoan feeds mainly on bacteria. Its green colour is caused by the presence of numerous individual Zoochlorella sp. algae, with which it has a symbiotic relationship. The algae photosynthesise inside the protozoan, providing it with sugars and oxygen, while deriving protection from their host. Filmed with darkfield illumination.

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Keywords: 1 minute or greater, 2, alga, algae, algal, anchor, anchored, animalcule, aquatic, attached, biological, biology, black background, cell, cilia, ciliate, cilium, darkfield, fauna, feeding, fresh water, freshwater, green, green stentor, hypotrich, invertebrate, invertebrates, light, lm, micro-organism, microbe, microbiological, microbiology, microorganism, microscope, microscopic, microscopy, motile, moving, multicellular, nature, no-one, nobody, organism, pair, plankton, pond life, protist, protozoa, protozoan, single celled, single-celled, stentor, stentor polymorphus, stentor sp, symbionts, symbiosis, symbiotic, trumpet, two, unicellular, wildlife, zoochlorella, zoological, zoology

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Stentor polymorphus, light microscopy

K005/6703 Rights Managed

Downloadable master

Duration: 00:01:58.05

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 2.4G

Original

Capture format: Canon EOS 600D

Codec: H.264

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