Ciliate protozoans, SEM

Ciliate protozoans, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Ciliate protozoans. Coloured scanning electron micrograph (SEM) of sessile (anchored) ciliate protozoan (subclass Peritrichia). Peritrichs are tiny single-celled organisms that inhabit aquatic environments. They feeds on bacteria and decaying organic matter, by filtering them through membranelles. Membranelles are specialised rows of fused cilia (hair-like extensions, pale green) located around the buccal cavity (primitive mouth), which beat to create vortices and wash the bacteria into the buccal cavity. They are also used for locomotion in mobile species.

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Keywords: animal, aquatic, biological, biology, buccal cavity, cilia, ciliate, ciliophora, cilium, colonial, colony, coloured, false-colour, false-coloured, fauna, filter feeder, freshwater, invertebrate, invertebrates, membranelles, microbiological, microbiology, microorganism, nature, peritrich, peritrichia, peritrichs, protist, protozoa, protozoan, protozoans, scanning electron micrograph, scanning electron microscope, sem, sessile, single-cell, single-celled, unicellular, wildlife, zoological, zoology

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