1: qhov peripheral ib feem ntawm cov hlab ntsha ntawm lub cev uas cov ceg ntoo tshwm nyob rau hauv qis vertebrate- piv pylangium. 2: ib tug sorus (raws li nyob rau hauv ferns ntawm tsev neeg Marattiaceae) ua los ntawm sporangia ntau sib koom los yog cohered rau hauv ib tug compound qauv.
Dab tsi yog Synangium hauv cov nroj tsuag?
hauv cov nroj tsuag vascular, ib pawg ntawm cov kabmob fused, lossis sporangia, uas cov spores tsim. Synangia yog cov yam ntxwv ntawm pawg neeg qub Psilotophyta, qee cov ferns (tshwj xeeb yog Marattia), thiab fern zoo li gymnosperms (noob ferns).
Synangium yog dab tsi hauv Psilotum?
Synangium yog ib lub trilocular lossis peb chambered, spore bearing qauv hauv Psilotum. Nws yog suav hais tias yog ib qho khoom fusion ntawm peb sporangia. Qhov chaw: axils ntawm foliar nplooj ntawm aerial tua. Synangium C. S: Nws muaj 3 chav los yog locules.
Indusium txhais li cas?
: an investing outgrowth or membrane particular: ib qho kev loj hlob ntawm fern frond uas npog lub sori.
Lub hom phiaj ntawm Indusium yog dab tsi?
Ib daim ntaub qhwv uas tiv thaiv cov sori hauv qee cov ferns. Qhov no tuaj yeem siv ntau hom. Thaum spores paub tab thiab npaj rau kev tso tawm, indusia feem ntau shrivel los yog khoov rov qab los nthuav tawm cov sporangia.
