Definitions for gnetophyta
gne·to·phy·ta

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Gnetopsida, class Gnetopsida, Gnetophytina, subdivision Gnetophytina, Gnetophytanoun

   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)

WikipediaRate this definition:0.0 / 0 votes

1. Gnetophyta

   Gnetophyta () is a division of plants (alternatively considered the subclass Gnetidae or order Gnetales), grouped within the gymnosperms (which also includes conifers, cycads, and ginkgos), that consists of some 70 species across the three relict genera: Gnetum (family Gnetaceae), Welwitschia (family Welwitschiaceae), and Ephedra (family Ephedraceae). Fossilized pollen attributed to a close relative of Ephedra has been dated as far back as the Early Cretaceous. Though diverse in the Early Cretaceous, only three families, each containing a single genus, are still alive today. The primary difference between gnetophytes and other gymnosperms is the presence of vessel elements, a system of conduits that transport water within the plant, similar to those found in flowering plants. Because of this, gnetophytes were once thought to be the closest gymnosperm relatives to flowering plants, but more recent molecular studies have brought this hypothesis into question. Though it is clear they are all related, the exact evolutionary inter-relationships between gnetophytes are unclear. Some classifications hold that all three genera should be placed in a single order (Gnetales), while other classifications say they should be distributed among three separate orders, each containing a single family and genus. Most morphological and molecular studies confirm that the genera Gnetum and Welwitschia diverged from each other more recently than they did from Ephedra.

ChatGPTRate this definition:0.0 / 0 votes

1. gnetophyta

   Gnetophyta is a division of seed plants comprising three distinct genera - Gnetum, Ephedra, and Welwitschia - that contain about 70 species. They are unique among gymnosperms in having vessel elements, a feature of certain cells giving plasticity. Gnetophyta is characterized by the presence of complex xylem tissue, often with vessels, long, paired bracts at the bases of ovules and pollen grains with furrows or pores. Their structural and molecular characteristics are more similar to angiosperms than other gymnosperms. Gnetophyta plants can be found in both tropical rainforests and deserts.

WikidataRate this definition:0.0 / 0 votes

1. Gnetophyta

   The plant division Gnetophyta or gnetophytes consists of three genera of woody plants grouped in the gymnosperms. The living Gnetophyta comprise some 70 species across the three genera Gnetum, Welwitschia, and Ephedra. The gnetophytes differ from other gymnosperms in having vessel elements as found in flowering plants. The gnetophytes evolutionary relationships remain unclear: in some classifications, all three genera are placed in a single order, while in other classifications they are distributed among three orders, each containing a single family and genus. Most morphological and molecular studies confirm that Gnetum and Welwitschia diverged from each other more recently than from Ephedra.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Gnetophyta

   A plant division of seed plants containing only a few members.

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1. • Class

How to pronounce gnetophyta?

1. Alex

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Numerology

1. Chaldean Numerology

   The numerical value of gnetophyta in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of gnetophyta in Pythagorean Numerology is: 5

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=gnetophyta
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Gnetophyta
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=gnetophyta