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en.wikipedia.org/wiki/Hydra_(genus)

Hydra /ˈhaɪdrə/ is a genus of small, fresh-water animals of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions. Biologists are especially interested in Hydra because of their regenerative ...

quatr.us/biology/animals/sponges/hydra.htm

January 2017 - For almost three billion years, the only living things on earth were one-celled creatures, either prokaryotes or eukaryotes. Even today, the vast ...

www.britannica.com/animal/Hydra-hydrozoan-genus

Hydra: genus of invertebrate freshwater animals of the class Hydrozoa ... reproduction (in reproduction (biology): Reproduction of organisms) (in sex: Life cycles ...

biology.stackexchange.com/questions/6884/why-is-the-hydra-biologically-immortal

Hydra are just one of the many organisms which are immortal. ... senescence are an evolutionary adaptation rather than a biological necessity.

www.cell.com/current-biology/abstract/S0960-9822(10)01172-3

Nov 23, 2010 ... Department of Biological Chemistry and the Developmental Biology Center ... The letter included a red chalk drawing of Hydra on parchment ...

www.sciencedirect.com/science/book/9780121459505

The online version of Biology of Hydra by Allson Burnett on ScienceDirect.com, the world's leading platform for high quality peer-reviewed full-text books.

www.ncbi.nlm.nih.gov/pmc/articles/PMC2591321

Full text. Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (126K), or click on a page ...

www.biology-online.org/dictionary/Hydra

Oct 3, 2005 ... Hydra. (Science: organism) genus of freshwater coelenterates ... Retrieved from " http://www.biology-online.org/bodict/index.php?title= ...

www.ask.com/youtube?q=Hydra+Biology&v=o9FRzUsT7-c
May 6, 2014 ... Biology Animation describing Hydra Reproduction Sexual Reproduction. Visit http://www.thestudio5.com.au/3d-modeling.html.