At the top of each of these pouches there is a minute orifice, the aperture of a small tubule lying above each pouch in the dorsal coelom. [Please select]
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#neph rid' i a#), a tubule functioning as a kidney in some of the worms.' [Please select]
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Siphunculus: the suctorial organ of a louse, contained within the tubule: in plant lice =honey tubes; q. [Please select]
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Foraminal tubule stout, cylindrical, usually somewhat contorted; its orifice irregular in outline. [Please select]
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(This tubule, which does not extend beyond the surface of the cellular coat, is liable to be broken off in dried specimens.) [Please select]
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The former genus possesses an upright orificial tubule and has zooecia separated by basal tubules. [Please select]
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