单词 | Pulmonata |
释义 | Pulmonata1 of 3plural noun Pul·mo·na·ta -ātə : a very large order of Gastropoda (subclass Euthyneura) comprising most land snails and slugs and many freshwater snails that are distinguished by lacking gills which are usually replaced by a lung or respiratory sac formed by the modification of the mantle cavity and communicating with the exterior by a contractile orifice capable of being entirely closed in which blood vessels line the walls and by having no true operculum and a nervous system that is concentrated and not twisted see basommatophora, stylommatophora Pulmonata 2 of 3" taxonomic synonym of pneumobranchia Pulmonata 3 of 3" taxonomic synonym of pulmonaria:2 |
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