what are pharyngeal gill slit ? explain in easy and detailed way
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Pharyngeal slits are filter-feeding organs found among deuterostomes. ... It is postulated that this is how pharyngeal slits first assisted in filter-feeding, and later with the addition of gills along their walls, aided in respiration of aquatic chordates.
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Pharyngeal slits are a third chordate feature, these are openings between the pharynax and the outside.
These slits are used to filter food particles from the water...
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