Nyob deb ntawm pawg neeg loj tshaj plaws ntawm cov neeg ua si gymnosperms yog cov conifers (pines, cypresses, thiab cov txheeb ze), ua raws li cycads, gnetophytes gnetophytes Gnetophyta (/nɛˈtɒfɪtə, ˈnɛtoʊfaɪt/ a faib ntawm cov nroj tsuag, pawg hauv cov gymnosperms (uas kuj suav nrog conifers, cycads, thiab ginkgos), uas muaj qee yam 70 hom thoob plaws peb hom relict: Gnetum (tsev neeg Gnetaceae), Welwitschia (tsev neeg Welwitschiaceae), thiab Ephedra (tsev neeg Ephedraceae). https://en.wikipedia.org › wiki › Gnetophyta
Gnetophyta - Wikipedia
(Gnetum, Ephedra thiab Welwitschia), thiab Ginkgo biloba (ib hom tsiaj nyob ib leeg).
Dab tsi yog pab pawg neeg ntau tshaj plaws ntawm gymnosperms?
Conifers yog nyob deb ntawm cov pab pawg uas muaj ntau tshaj plaws ntawm gymnosperms nrog rau rau yim yim tsev neeg, nrog rau tag nrho ntawm 65–70 genera thiab 600–630 hom (696 lub npe lees paub). Conifers yog ntoo ntoo thiab feem ntau yog evergreens.
Qhov twg yog qhov gymnosperm loj tshaj plaws?
Cov pab pawg neeg loj tshaj plaws nyob hauv gymnosperms yog cov conifersthiab kom paub meej lub ntug dej hiav txwv Redwood yog qhov siab tshaj plaws nyob gymnosperm, nws kuj yog tsob ntoo siab tshaj plaws hauv ntiaj teb. nrog qhov siab ntawm 380.30 ko taw. Cov conifers yog ntoo thuv, cypresses, thiab cov txheeb ze.
Dab tsi yog pawg tsawg tshaj plaws ntawm gymnosperms?
Cov Gymnosperms (Conifers, cycads thiab cov phooj ywg)
Cov pab pawg neeg loj tshaj plaws ntawm cov neeg ua haujlwm gymnosperms yog cov conifers (pines, cypresses thiab cov txheeb ze) thiab qhov tsawg tshaj plaws yog ginkgo, ib hom nroj tsuag muaj sia nyob hauv Suav teb. Muaj nyob ib ncig ntawm 1000 hom gymnosperm.
Dab tsi yog kev faib tawm ntawm gymnosperms?
Txhua tus gymnosperms muaj nyob hauv plaub qhov loj ntawm cov nroj tsuag. Cov kev faib yog Ginkgophyta, Cycadophyta, Gnetophyta, thiab Coniferophyta. Kev faib Ginkgophyta muaj Ginkgo Biloba lossis Maidenhair tsob ntoo.
