Hydrozoa
1
9.9
A group of mostly sea animals like hydras and small jellyfish with two life stages
- noun
- /ˌhaɪdrəˈzoʊə/
- Specialized
:
Hidrozoo
- Many scientists are intrigued by the wide variety of Hydrozoa species found in ocean environments.
Examples
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The Hydrozoa class includes both hydras and jellyfish, showcasing a remarkable life cycle.
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In her studies of marine life, she discovered that Hydrozoa have stages as polyps and medusae.
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There's porifera, coelenterata, hydrozoa, scyphozoa Anthozoa, ctenophora, bryozoas three
Surface Forms
Morphology
Hydrozoa = hydro + zoa
Although the term is historically built from classical elements meaning roughly 'water' and 'animals', it is a specialized taxonomic label that is not transparently recoverable for an average learner.
Etymology
The word Hydrozoa comes from Greek parts hydro- meaning 'water' and -zoa meaning 'animals', the same 'zoo' you see in zoo. So Hydrozoa are 'water animals', which fits because this group includes hydras and jellyfish-like creatures that live in the sea.