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