holotrichous isorhiza
(CNIDARIA: Hydrozoa)
A nematocyst with tubes spiney throughout; see atrichous isorhiza, basitrichous isorhiza.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • isorhiza — n. [Gr. isos, equal; rhiza, root] (CNIDARIA) A form of nematocyst in which the tube is open and the same diameter along the tube, responding to mechanical stimuli, and is used in anchoring the animal when it walks on its tentacles; see atrichous… …   Dictionary of invertebrate zoology

  • atrichous isorhiza — (CNIDARIA: Hydrozoa) A small nematocyst with a smooth tubule; see holotrichous isorhiza, basitrichous isorhiza …   Dictionary of invertebrate zoology

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