: muaj phloem nyob ib puag ncig xylem -siv ntawm qee qhov sib txawv ntawm cov hlab ntsha - piv amphivasal.
Amphicribral bundles yog dab tsi?
(b) Amphicribral bundle:
Ib vascular bundle uas phloem encircles lub hauv paus strand ntawm xylem yog hu ua amphicribral bundle, los yog hu ua hadrocentric bundle. … Cov pob khoom tseem ceeb, tsis yog amphivasal lossis amphicribral, raug kaw vim tsis muaj cambium nyob nruab nrab ntawm xylem thiab phloem.
Amphivasal thiab Amphicribral yog dab tsi?
Qhov txawv ntawm Amphicribral thiab Amphivasal yog dab tsi? Amphicribral vascular system muaj lub hauv paus strand ntawm xylem uas nyob ib puag ncig los ntawm lub nplhaib ntawm phloem. Nyob rau hauv sib piv, amphivasal vascular system muaj lub hauv paus strand ntawm phloem uas yog surrounded los ntawm ib lub nplhaib ntawm xylem.
Amphivasal yog dab tsi?
: muaj xylem nyob ib puag ncig phloem -siv ntawm qee qhov sib txawv ntawm cov hlab ntshav - piv amphicribral.
Amphivasal sau tus piv txwv yog dab tsi?
Amphivasal lossis leptocentric vascular bundles yog ib hom concentric vascular bundles. Nyob rau hauv no xylem yog pom ntawm sab nraum uas nyob ib ncig ntawm lub phloem. Dracena thiab Yucca muaj hom vascular system. Cucurbita muaj bicollateral vascular bundles. Cycas thiab Dryopteris muaj amphicribal vascular bundles.
