Coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes. Synonym: class Hydrozoa.
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Words linked to "Hydrozoa" : Sertularia, phylum Cnidaria, class, phylum Coelenterata, Siphonophora, class Hydrozoa, hydroid, Coelenterata, Cnidaria, genus Hydra, order Siphonophora, genus Sertularia |
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