Hydra

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Hydra

a genus of the coelenterate class Hydrozoa. Most species are found in freshwater, and are unusual members of the Hydrozoa in not having an ALTERNATION OF GENERATIONS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Recent molecular phylogenetic analyses suggest that the symbiotic green algae in hydras of strains J7 and J10 belong to the genus Chlorococcum (Kawaida et al., 2013; Ishikawa et al., 2016a).
Hydras have long been known in the animal kingdom for their regenerative abilities.
The Hydras more than held their own with a roster of players not totally familiar with each other and with limited practice time.
Hydras live in a world that's very different from ours.
Earlier, it was thought that hydras created new mouths by moving around cells to create an opening.
The total number of RFamide-positive neurons and the total number of JD1-positive neurons increased throughout the hydras' development (Fig.
Just follow these easy steps and you should be able to catch and keep all the hydras you want.
2 December 2011 - Clean energy technologies holding American Security Resources Corporation (OTCBB:ARSC) announced the completion of the merger between its unit Hydra Fuel Cell Corporation and technology developer iVoice Inc (OTCBB:IVOI), effective 30 November 2011.
American Security Resources Corporation (ARSC) recently announced that its Hydra Fuel Cell Corporation subsidiary has joined the University of South Carolina's (USC) Center for Fuel Cells Industry Advisory Board.