Xylem nqa dej thiab zaub mov los ntawm cov hauv paus hniav mus rau nplooj. Whereas, phloem nqa lub zaub mov npajlos ntawm nplooj mus rau ntau qhov chaw ntawm cov nroj tsuag.
Xylem thiab phloem hoob 9 yog dab tsi?
Xylem yog tsim los ntawm cov hlwb tuag (parenchyma yog tib lub cell uas muaj sia nyob hauv xylem). Phloem feem ntau yog tsim los ntawm cov hlwb muaj sia (fibers yog tib lub hlwb tuag hauv phloem). Xylem muaj Xylem hlab ntsha, fiber ntau thiab tracheids.
Dab tsi cais xylem ntawm phloem?
Nyob hauv txhua lub vascular pob, xylem thiab phloem yog sib cais los ntawm ib yam khoom hu ua vascular cambium.
YYim phloem thiab cambium txawv li cas?
Ytissue (the xylem, phloem, and vascular cambium). Cov xylem thiab phloem yog
ua thiab txhawb cov ntaub so ntswg , thiab vascular cambium yog ib sab meristem uas ua rau cov ntaub so ntswg theem nrab, uas ua rau cov nroj tsuag theem nrab.
phloem thiab xylem nyob qhov twg?
Nyob hauv nplooj, cov vascular bundles nyob ntawm cov spongy mesophyll. Lub xylem yog taw qhia rau lub adaxial nto ntawm nplooj (feem ntau yog sab sauv), thiab phloem yog taw qhia mus rau abaxial nto ntawm nplooj.
