Video: Vascular rays ua dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov hlab ntsha tawg nthuav dav radially hla lub qia, pab ua kom tau zoo los ntawm cev bundles rau cov ntaub so ntswg nrog lawv. … Txhua qhov ntev-thiab lawv tsim cov vascular rays , uas yog cov txheej txheem kab rov tav ntawm cov ntaub so ntswg thib ob; kab rov tav kab ke no ua nyob rau hauv translocation thiab cia zaub mov thiab dej.
Xav txog qhov no, qhov tseem ceeb ntawm kev muaj vascular system yog dab tsi?
Xylem thauj thiab khw muag khoom dej thiab dej -soluble cov as-ham nyob rau hauv vascular nroj tsuag. Phloem yog lub luag haujlwm thauj cov suab thaj, cov protein, thiab lwm yam organic molecules hauv cov nroj tsuag. Vascular nroj tsuag muaj peev xwm loj hlob siab dua lwm cov nroj tsuag vim lub rigidity ntawm xyem hlwb, uas txhawb cov nroj tsuag.
Tsis tas li ntawd, dab tsi yog txoj haujlwm ntawm cov hlab ntshav hauv ib nplooj? Vascular bundles yog sau los ntawm cov raj zoo li cov ntaub so ntswg uas ntws los ntawm cov nroj tsuag, thauj cov tshuaj tseem ceeb mus rau ntau qhov chaw ntawm tsob ntoo. Xylem thauj cov dej thiab cov as -ham, phloem thauj cov organic molecules, thiab cambium koom nrog hauv kev loj hlob ntawm cov nroj tsuag.
Raws li txoj cai, dab tsi yog cov duab nruab nrab nruab nrab thiab lawv lub luag haujlwm yog dab tsi?
Cov no medullary lub pith rays Nws yog ib qho tseem ceeb rau lub radial conduction ntawm dej, minerals thiab lwm yam organic tshuaj. Lawv thauj cov khoom ntawm qhov chaw mus rau qhov chaw. Cov no rays tseem hu ua vascular rays lub pith rays.
Dab tsi yog qhov zoo kom muaj cov leeg nqaij?
Kev muab zaub mov, Kev faib ua kua thiab lub zog. Feem ntau ntawm qhov zoo ntawm cov leeg nqaij vascular los ntawm txoj haujlwm no: A tracheophyte's xylem thiab phloem-uas suav nrog cov hlab ntshav thiab muaj tsev nyob hauv qia-pab kom muaj kua, cov as-ham thiab lub zog yuav tsum tau thauj thiab faib thoob plaws hauv tag nrho cov nroj tsuag.
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