Coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes. Synonym: Hydrozoa.
![]() |
![]() |
![]() | ![]() | ![]() | |||
|
|
|
![]() |
Words linked to "Class Hydrozoa" : hydroid, class, genus Hydra, phylum Coelenterata, Coelenterata, Sertularia, hydrozoan, Cnidaria, Siphonophora, genus Sertularia, order Siphonophora, phylum Cnidaria |
Copyright © 2025 Dictionary One.com |