| 释义 |
division Gymnospermophyta
Thesaurus| Noun | 1.division 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)class Gymnospermae, Gymnospermae, Gymnospermophytaclass - (biology) a taxonomic group containing one or more ordersdivision Spermatophyta, Spermatophyta - seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots)gymnosperm family - a family of gymnospermsgymnosperm genus - a genus of gymnospermsgymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovaryclass Gnetopsida, Gnetophyta, Gnetophytina, Gnetopsida, subdivision Gnetophytina - 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 Cycadopsida, Cycadophyta, Cycadophytina, Cycadopsida, subdivision Cycadophyta, subdivision Cycadophytina - palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders; possibly not a natural group; in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta)class Pteridospermopsida, Pteridospermopsida - extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and alliesclass Coniferopsida, Coniferophyta, Coniferophytina, Coniferopsida, subdivision Coniferophytina - cone-bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in turn include the surviving orders Coniferales and Taxales (yews) and sometimes Ginkgoales as well as extinct orders such as Cordaitales (of the Carboniferous and Permian)class Ginkgophytina, class Ginkgopsida, Ginkgophytina, Ginkgopsida, subdivision Ginkgophyta, subdivision Ginkgophytina - ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophytagymnospermous tree - any tree of the division Gymnospermophyta |
division Gymnospermophyta
Synonyms for division Gymnospermophytanoun plants having naked seeds not enclosed in an ovarySynonyms- class Gymnospermae
- Gymnospermae
- Gymnospermophyta
Related Words- class
- division Spermatophyta
- Spermatophyta
- gymnosperm family
- gymnosperm genus
- gymnosperm
- class Gnetopsida
- Gnetophyta
- Gnetophytina
- Gnetopsida
- subdivision Gnetophytina
- class Cycadopsida
- Cycadophyta
- Cycadophytina
- Cycadopsida
- subdivision Cycadophyta
- subdivision Cycadophytina
- class Pteridospermopsida
- Pteridospermopsida
- class Coniferopsida
- Coniferophyta
- Coniferophytina
- Coniferopsida
- subdivision Coniferophytina
- class Ginkgophytina
- class Ginkgopsida
- Ginkgophytina
- Ginkgopsida
- subdivision Ginkgophyta
- subdivision Ginkgophytina
- gymnospermous tree
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