Video: Dab tsi yog qhov txawv ntawm nplooj ntawv yooj yim thiab cov nplooj ntawv sib xyaw?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dab tsi yog qhov Qhov sib txawv ntawm cov nplooj yooj yim thiab cov nplooj ntawv sib xyaw ? Yooj yim nplooj muaj ib rab ntaj. Cov nplooj muaj cov hniav muab faib ua nplooj ntawv. Qee lub sij hawm, cov nplooj ntawv tau muab faib ntxiv thiab ua rau hauv a ob npaug nplooj nplooj.
Ib yam li ntawd, tej zaum koj yuav nug, qhov txawv ntawm nplooj ntawv yooj yim thiab nplooj ntoos sib xyaw yog dab tsi?
A nplooj yooj yim hniav yog undivided raws li qhia nyob rau sab laug (txawm hais tias cov margins yuav toothed los yog txawm lobed). Cov hniav ntawm a nplooj nplooj muab faib ua ob peb nplooj ntawv raws li qhia nyob rau sab xis. Yog tias muaj kev tsis ntseeg txog seb koj tab tom saib ib nplooj los yog ib daim ntawv, nrhiav lub lateral buds.
Ib yam li ntawd, cov nplooj sessile txawv li cov nplooj zoo li cas? Lub ntsiab txawv nruab nrab tsis muaj zog thiab ib txwm tawm yog petiole. Sessile nplooj tsis muaj tsis muaj zog thaum nplooj muaj petiole. Hauv botany, sessility (lub ntsiab lus "sab", siv nyob rau hauv lub siab ntawm "so rau saum npoo") yog ib tug yam ntxwv ntawm cov nroj tsuag qhov chaw uas tsis muaj stalk.
Ib sab ntawm no, vim li cas lub tswv yim ntawm cov xov tooj yooj yim tsis siv tau?
Cov tswvyim ntawm "yooj yim cell "yog tsis raug . Cells me me, tab sis muaj zog. Lawv muaj cov chaw tsim hluav taws xob, cov chaw tsim tshuaj lom neeg, cov tsev khaws khoom noj khoom haus, cov chaw pov tseg pov tseg, thiab cov chaw thauj mus los.
Dab tsi piav txog lub qia ntawm Dicots?
Dicot stems muaj lawv cov vascular bundles nyob rau hauv ib lub nplhaib kev npaj. Monocot stems muaj feem ntau ntawm lawv cov vascular bundles nyob ze ntawm sab nraud ntawm ntug qia . Cov pob khoom yog ncig los ntawm parenchyma loj hauv cheeb tsam cortex. Tsis muaj thaj tsam pith hauv monocots.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
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