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