Nyob hauv qee hom (L. lucidulum), cov nplooj sporangium-cov kabmob (sporophylls) tshwm sim hauv thaj chaw ntawm cov nroj tsuag ntawm cov stems. Feem ntau, txawm li cas los xij, cov sporophylls tshwm sim hauv tshwj xeeb compressed stems hu ua cones lossis strobili. Txhua sporophyll yog txuam nrog ib lub daj mus rau txiv kab ntxwv lub raum zoo li sporangium.
Dab tsi yog sporophyll hauv gymnosperms?
A sporophyll yog ib nplooj uas dais sporangia. Ob leeg microphylls thiab megaphylls tuaj yeem yog sporophylls. … Cycads tsim strobili, ob qho tib si pollen-tsim thiab noob-tsim, uas yog tsim los ntawm sporophylls. Ginkgo tsim microsporophylls sib sau ua ke rau hauv paj ntoos strobilus.
Sporophyll muaj nuj nqi yog dab tsi?
A sporophyll yog nplooj ua spores. Sporophylls yog ib feem ntawm diploid sporophyte tiam, thiab cov spores yog tsim los ntawm meiosis thiab yuav germinate los tsim haploid gametophytes. Cov spores tau yug los hauv sporangia, uas tuaj yeem ua ntau yam hauv ntau hom nroj tsuag.
Koj yuav pom fern gametophyte qhov twg?
Lawv nrhiav tau ntawm lub hauv qab ntawm fern fronds.
Strobili nyob qhov twg?
Strobili lossis cones muaj nyob hauv qee pteridophytes (xws li, Selaginella thiab Equisetum) thiab tag nrho cov gymnosperms.
