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Từ điển WordNet v3.1 - WordNet Dictionary
class Gymnospermae
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)
• Syn:
Gymnospermae, Gymnospermophyta, division Gymnospermophyta
• Hypernyms:
class
• Member Holonyms:
Spermatophyta, division Spermatophyta
• Member Meronyms:
gymnosperm family, gymnosperm genus, gymnosperm, Gnetopsida, class Gnetopsida,
Gnetophytina, subdivision Gnetophytina, Gnetophyta, Cycadopsida, class Cycadopsida, Cycadophytina,
subdivision Cycadophytina, Cycadophyta, subdivision Cycadophyta, Pteridospermopsida, class Pteridospermopsida, Coniferopsida,
class Coniferopsida, Coniferophytina, subdivision Coniferophytina, Coniferophyta, Ginkgopsida, class Ginkgopsida,
Ginkgophytina, class Ginkgophytina, subdivision Ginkgophytina, subdivision Ginkgophyta, gymnospermous tree
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