Los ntawm qhov kev xav ntawm lub cev, cov tawv ntoo yog cov nroj tsuag zoo kawg nkaus. Nws yog tsim los ntawm cov ntaub so ntswg nyob sab hauv nrog rau cov ntaub so ntswg sab nraud uas tuag los yog tsis nyob ntawm kev loj hlob, raug thawb tawm sab nraud raws li cov ntoo trunks nthuav dav nrog kev loj hlob.
Puas yog tsob ntoo muaj sia?
Cov tawv tawv mos, los yog bast, yog tsim los ntawm vascular cambium; nws muaj cov ntaub so ntswg phloem theem nrab uas nws cov txheej sab hauv tshaj conveys zaub mov los ntawm nplooj mus rau tag nrho cov nroj tsuag. Cov tawv tawv sab nrauv, uas feem ntau yog cov ntaub so ntswg tuag, yog cov khoom ntawm cork cambium (phellogen).
tsob ntoo puas muaj sia nyob?
Feem ntau ntawm cov kab ntoo yog cov ntaub so ntswg tuag thiab tsuas yog pab txhawb nqa qhov hnyav ntawm tsob ntoo ntoo. Cov txheej sab nraud ntawm tsob ntoo lub cev tsuas yog qhov chaw nyob xwb. Cambium tsim cov ntoo tshiab thiab cov tawv ntoo tshiab.
Puas yog tsob ntoo tawv ntoo tuag lawm?
Ntxhais ntoo yeej muaj tawv tawv thiab sab nrauv - txheej txheej tawv tawv yog tsim los ntawm cov neeg muaj sia thiab txheej txheej yog tsim los ntawm cov hlwb tuag, zoo li peb ntiv tes. Lub npe scientific rau txheej txheej tawv tawv yog Phloem.
Koj puas noj tsob ntoo tawv?
Yes, koj tuaj yeem noj tsob ntoo tawv ntoo ua zaub mov zoo thiab muaj txiaj ntsig zoo - tsuav yog koj siv cov tawv ntoo ntawm cov ntoo zoo. … Cov tawv tawv ntawm kev xaiv zaub mov yog txheej cambium, uas nyob ib sab ntawm ntoo.
