Nyob rau hauv thaj chaw ntawm horticulture thiab botany, lo lus deciduous txhais tau hais tias "poob ntawm maturity" thiab "tending to fall off", hais txog cov ntoo thiab shrubs uas raws caij nyoog los nplooj, feem ntau nyob rau hauv lub caij nplooj zeeg; mus rau lub caij nplooj ntoos hlav, tom qab flowering; thiab mus rau qhov tawg ntawm cov txiv hmab txiv ntoo siav.
piv txwv ntawm tsob ntoo deciduous yog dab tsi?
Oak, maple, thiab elm yog piv txwv ntawm cov ntoo deciduous. Lawv poob lawv cov nplooj nyob rau hauv lub caij nplooj zeeg thiab loj hlob nplooj tshiab nyob rau hauv lub caij nplooj ntoos hlav. Ntoo, shrubs, thiab herbaceous perennials uas poob lawv nplooj rau ib feem ntawm lub xyoo yog categorized los ntawm botanists li deciduous.
Yuav ua li cas peb thiaj paub tias tsob ntoo yog deciduous?
Lo lus deciduous txhais tau tias kom "poob," thiab txhua lub caij nplooj zeeg no cov ntoo poob lawv nplooj. Feem ntau cov ntoo deciduous yog broad-leaved, nrog dav, tiaj nplooj. Cov ntoo feem ntau muaj cov duab sib npaug, nrog cov ceg uas nthuav tawm thaum lawv loj hlob. … Cov ntoo txiav ntoo zoo nyob rau thaj chaw uas muaj huab cua me me, ntub dej.
tsob ntoo deciduous txhais li cas?
1 biology: ntog tawm lossis poob raws caij nyoog lossis ntawm qee theem ntawm kev loj hlob hauv lub neej voj voogcov nplooj deciduous nplai. 2 biology ua. a: muaj cov ntoo deciduous maples, birches, thiab lwm yam ntoo deciduous deciduous dentition. b: muaj cov nroj tsuag deciduous ib deciduous hav zoov.
tsob ntoo deciduous nyob qhov twg?
zaub muaj feem ntau ntawm cov ntoo nplooj uas tawg tag nrho lawv cov nplooj thaum lub caij. Cov hav zoov deciduous pom muaj nyob rau hauv peb thaj tsam nruab nrab-latitude nrog huab cua huab cua tshwj xeeb los ntawm lub caij ntuj no thiab nag lossis daus txhua xyoo: sab hnub tuaj North America, sab hnub poob Eurasia, thiab sab qaum teb sab hnub tuaj Asia
