| 释义 |
Gnetopsida
Thesaurus| Noun | 1. | Gnetopsida - gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as a class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta)class Gnetopsida, Gnetophyta, Gnetophytina, subdivision Gnetophytinaclass - (biology) a taxonomic group containing one or more ordersclass Gymnospermae, division Gymnospermophyta, Gymnospermae, Gymnospermophyta - plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida)Gnetales, order Gnetales - chiefly tropical or xerophytic woody plants; practically unknown as fossils but considered close to the ancestral line of angiosperms |
Gnetopsida
Gnetopsida[nə′täp·səd·ə] (botany) A class of gymnosperms comprising the subdivision Gneticae. Gnetopsida
Related to Gnetopsida: Gnetales, Gnetophytes, GnetaeSynonyms for Gnetopsidanoun gymnospermous flowering plantsSynonyms- class Gnetopsida
- Gnetophyta
- Gnetophytina
- subdivision Gnetophytina
Related Words- class
- class Gymnospermae
- division Gymnospermophyta
- Gymnospermae
- Gymnospermophyta
- Gnetales
- order Gnetales
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