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choanoflagellate
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choanoflagellate

organism
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Also known as: Choanoflagellida, collared flagellate
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Related Topics:
zooflagellate
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choanoflagellate, any protozoan of the flagellate order Choanoflagellida (sometimes classified in the order Kinetoplastida) having a transparent food-gathering collar of cytoplasm around the base of the flagellum. Many choanoflagellates are solitary and sessile (attached to a surface), with or without a stalk. Some have a lorica (rigid covering). These organisms closely resemble the collar cells of sponges. Salpingoeca is an example.