What is gnetophytes in biology?

What is gnetophytes in biology?

gnetophyte, (division Gnetophyta), any member of the division Gnetophyta, a small group of gymnospermous vascular plants that are represented by three living genera: Ephedra, Gnetum, and Welwitschia. There are 65 species in the genus Ephedra, 30 or more in Gnetum, and only 1 in Welwitschia.

What is the meaning of gnetophytes?

/ (ˈniːtəʊˌfaɪt) / noun. any gymnosperm plant of the phylum Genetophyta, which includes three genera: Gnetum, consisting of small tropical trees and vines, Ephedra (see ephedra), and Welwitschia (see welwitschia)

What is the meaning of Gnetophyta?

Gnetophyta (/nɛˈtɒfɪtə, ˈnɛtoʊfaɪtə/) 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 ( ...

What is the meaning of Gnetophyte?

/ (ˈniːtəʊˌfaɪt) / noun. any gymnosperm plant of the phylum Genetophyta, which includes three genera: Gnetum, consisting of small tropical trees and vines, Ephedra (see ephedra), and Welwitschia (see welwitschia)

What are gnetophytes characteristics?

Gnetophytes (approximately 70 extant species)

They have several traits in common with angiosperms, such as vessel elements in the xylem, double fertilization, and a covering over their seeds (more on this in labs 21 and 22). Even their leaves are angiosperm-like, with netted venation.Jun 17, 2020

What ecological characteristic do gnetophytes share with flowering plants?

While all vascular plants have tracheids, only gnetophytes and flowering plants (Angiosperms) have vessel elements. This similarity in morphology led early botanists to assume that flowering plants are all descendants of gnetophytes.

Where are gnetophytes found?

Gnetophyta plants are distributed around much of the world mostly in tropical and temperate climates. The genus Gnetum has a tropical distribution as is found in Southeast Asia, northern South America, the South Pacific and western Africa.Jan 16, 2016