Nyob rau hauv ib daim nplooj pinnately compound, cov hlab ntsha nruab nrab yog hu ua midrib. Bipinnately compound (los yog ob chav compound) nplooj yog faib ob zaug; cov nplooj ntawv yog teem raws ib tug thib ob txoj hlab ntsha, uas yog ib tug ntawm ob peb cov hlab ntsha branching tawm ntawm nruab nrab cov hlab ntsha. Txhua daim ntawv hu ua "pinnule".
midrib ntawm nplooj hu ua dab tsi?
nplooj qauv
…to form the midvein, or midrib. Cov leeg me me ntawm nplooj nplooj pib nyob ze ntawm nplooj nplooj; Tom qab cov hlab ntsha loj tom ntej tau pib ua ntu zus mus rau lub hauv paus, ua raws li tag nrho cov qauv ntawm nplooj loj hlob.
midrib ntawm nplooj ntoos nyob qhov twg?
Lub midrib feem ntau pom nyob rau sab nraub qaum ntawm nplooj, uas dhau los ua qhov khaws cia ntawm stomata. Whereas nplooj nplooj yog ib tug nthuav nyias qauv, uas yog ncua rau ob sab ntawm lub midrib. Midrib pab cov nplooj kom nyob rau hauv ib qho chaw upright, thiab nws kuj pab kom cov nplooj muaj zog thaum cua.
Cov hlab ntsha thiab midrib yog dab tsi?
Cov hlab ntsha nruab nrab lossis cov hlab ntsha tseem ceeb yog lub ntsiab lossis nruab nrab ntawm nplooj ntawm cov nplooj uas tshwm sim rau cov hlab ntsha thib ob lossis sab nraud. Feem ntau hu ua midrib los yog qia ntawm nplooj, tshwj xeeb tshaj yog thaum nws yog prominently tsa los yog kev nyuaj siab, lub midvein yog lub ntsiab los yog lub hauv paus hlab ntsha ntawm nplooj los ntawm uas tshwm sim rau theem nrab los yog lateral veins.
midrib hauv nplooj 6 yog dab tsi?
Midrib: Ib tug midrib yog tus tseem ceeb (lub ntsiab / tuab) kab nyob nruab nrab ntawm ibnplooj. Cov leeg: Cov leeg yog cov kab nyias nyias nyias los ntawm nruab nrab ntawm nplooj. Leaf venation: Tus tsim, uas yog, kev npaj ntawm cov leeg ntawm nplooj yog hu ua venation.
