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" : hydroid, Cnidaria, Siphonophora, phylum Cnidaria, hydrozoan, genus Hydra, Coelenterata, class Hydrozoa, phylum Coelenterata, Sertularia, genus Sertularia, class, order Siphonophora |
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