Qhov sib txawv tseem ceeb ntawm cov khoom ntiag tug thiab cov kab mob bicollateral vascular bundles yog cov collateral vascular bundles muaj ib tug strand ntawm phloem thiab xylem nyob rau tib lub vojvoog thaum bicollateral vascular bundle muaj ob phloem strands situated nyob rau hauv peripheral thiab sab hauv ntawm xylem.
Cov nroj tsuag vascular tau thauj cov ntaub so ntswg hu ua vascular bundles. Vascular bundles muaj ob lub ntsiab ntawm cov ntaub so ntswg: xylem thiab phloem. Xylem yog lub luag haujlwm rau kev thauj mus los ntawm cov dej thiab cov zaub mov los ntawm cov av mus rau cov nroj tsuag thaum phloem yog lub luag haujlwm rau kev thauj mus los ntawm carbohydrates los ntawm photosynthetic qhov chaw mus rau lwm qhov ntawm cov nroj tsuag. Yog li ntawd, vascular bundles tuaj yeem pom nyob rau hauv ntu ntu ntawm stems thiab keeb kwm. Muaj plaub hom vascular pob hauv vascular nroj tsuag. Lawv yog cov khoom siv nyiaj txiag, cov pob khoom bicollateral, cov pob khoom sib koom ua ke thiab cov pob radial vascular.
Dab tsi yog Cov Khoom Muag Khoom Muag?
Cov kab mob vascular muaj ib txoj hlua ntawm phloem nthuav tawm sab nraud rau txoj hlua ntawm xylem ntawm tib lub vojvoog ib sab. Collateral vascular bundles yuav los yog tsis muaj cambium ntawm phloem thiab xylem. Cambium yog tsis tuaj nyob rau hauv kaw collateral vascular bundles thaum muaj ib tug cambium ntawm phloem thiab xylem ntawm qhib collateral vascular bundles. Txij li thaum tsis muaj cambium nyob rau hauv kaw collateral vascular bundles, cov stems tsis tuaj yeem nce hauv txoj kab uas hla los ntawm kev loj hlob theem nrab.
Daim duab 01: Kaw Cov Khoom Siv Lub Ncauj Ncauj
Yuav luag txhua cov nroj tsuag monocotyledon tau kaw cov kab mob vascular. Txawm li cas los xij, cov stems uas muaj cov khoom lag luam qhib vascular bundles qhia kev loj hlob theem nrab. Yog li ntawd, lawv tuaj yeem nce hauv txoj kab uas hla. Qhib collateral vascular bundles yog yam ntxwv ntawm dicotyledons.
Dab tsi yog Bicollateral Vascular Bundles?
Bicollateral vascular bundle yog ib qho kev sib txuas ntawm cov hlab ntsha uas lub xylem nyob hauv nruab nrab ntawm ob lub phloem strands. Yog li ntawd, muaj ob lub phloem strands (sab phloem thiab puab phloem) nyob rau hauv ib tug bicollateral vascular bundle.
Daim duab 02: Bicollateral Vascular Bundles
Tsis tas li ntawd, muaj ob txoj hlua ntawm cambium nyob rau hauv ib lub pob vascular bicollateral. Ib qho cambium strand yog nyob nruab nrab ntawm peripheral phloem thiab xylem. Lwm qhov yog tam sim no nyob rau hauv nruab nrab ntawm xylem thiab puab phloem. Yog li ntawd, bicollateral vascular bundles yeej ib txwm qhib. Secondary thickening tshwm sim vim sab nrauv cambium. Cucurbita thiab cephalandra muaj bicollateral vascular bundles.
Dab tsi yog qhov zoo sib xws ntawm Collateral thiab Bicollateral Vascular Bundles?
- Collateral thiab bicollateral vascular bundles yog ob hom kev sib txuas vascular bundles.
- Nroj stems qhia ob hom vascular bundles.
- Tsuas yog ib txoj hlua xylem muaj nyob rau hauv ob hom vascular bundles.
Dab tsi yog qhov sib txawv ntawm Cov Nyiaj Pov Hwm thiab Cov Nyiaj Them Se Ua Haujlwm?
Collateral vascular bundle yog ib hom kev sib txuas vascular pob uas muaj phloem thiab xylem nyob ntawm tib lub vojvoog. Nyob rau hauv sib piv, bicollateral vascular bundle yog ib hom conjoint vascular pob uas muaj ob phloems nyob rau hauv peripheral thiab sab hauv ntawm lub xylem. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov khoom ntiag tug thiab bicollatera vascular bundles. Collaterall vascular bundles tej zaum yuav raug kaw los yog qhib, tab sis, bicollateral vascular bundles yeej ib txwm qhib.
Cov lus qhia hauv qab no qhia txog qhov sib txawv ntawm cov khoom ntiag tug thiab cov kab mob bicollateral vascular bundles.
Summary – Collateral vs Bicollateral Vascular Bundles
Ib pob khoom vascular pob yog ib hom kev sib txuas vascular pob uas cov phloem thiab xylem pw ntawm tib lub vojvoog. Nyob rau hauv sib piv, ib tug bicollateral vascular bundle yog ib hom ntawm conjoint vascular pob nyob rau hauv uas ob phloem strands nyob rau hauv peripheral thiab sab hauv ntawm xylem. Tsis tas li ntawd, cov kab mob vascular bundles yog qhib los yog kaw thaum bicollateral vascular bundles yeej ib txwm qhib. Tsis tas li ntawd, qhib pob khoom vascular pob tsuas muaj ib qho cambium strand thaum bicollateral vascular bundle muaj ob cambium strands. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov khoom ntiag tug thiab cov kab mob bicollateral vascular bundles.
