Nota de aplicación
Members of a genus containing freshwater invertebrate animals of very simple structure, the body having the form of a cylindrical tube, with a mouth surrounded by a ring of tentacles with stinging thread-cells, usually living attached to objects or plants, though able to float or move by cartwheeling from base to tentables; they reproduce by buds or eggs.
Ubicación jerarquía
- faceta agentes
- .. organismo vivo (nombre jerárquico)
- .... organismo vivo (entidad)
- ...... Eucariota (dominio)
- ........ animal (reino)
- .......... Cnidaria (phylum)
- ............ Hidrozoo (clase)
- .............. antomedusa (orden)
- ................ Hydridae (familia)
- .................. Hydra (genus)