Hydra

A genus of freshwater polyps in the family Hydridae, order Hydroida, class HYDROZOA. They are of special interest because of their complex organization and because their adult organization corresponds roughly to the gastrula of higher animals.

Year introduced: 1972

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Tree Number(s): B01.050.500.308.485.400

MeSH Unique ID: D006829

Registry Number: txid6083

Entry Terms:

• Hydras

Previous Indexing:

• Coelenterata (1966-1971)

All MeSH Categories
Organisms Category
Eukaryota
Animals
Invertebrates
Cnidaria
Hydrozoa
Hydra