Qhov sib txawv ntawm qhov sib npaug venation thiab reticulated venation

Hloov tshiab kawg: 05/06/2023
Tus sau: Sebastian Vidal

Kev Taw Qhia

Venation, nyob rau hauv botany, hais txog cov qauv ntawm cov leeg pom ntawm nplooj ntawm cov nroj tsuag. Cov nplooj feem ntau muaj ib lossis ntau cov hlab ntsha khiav los ntawm lawv qhov chaw uas thauj dej thiab cov khoom noj. Muaj ob hom venation nyob rau hauv cov nplooj ntawm cov nroj tsuag: parallel venation thiab reticulated venation.

thaum uas tig mus venation

Parallel venation yog hais txog cov nplooj uas muaj ntev, ncaj leeg uas khiav mus rau ib leeg. Cov hlab ntsha no muaj ntau dua hauv cov nroj tsuag monocotyledonous, xws li pob kws lossis nplej.

Hom ntawm parallel venation

  • Uniaxial: cov hlab ntsha khiav mus rau ib leeg thiab tsis ceg.
  • Multiaxial: Cov leeg khiav mus rau ib leeg tab sis ceg ob peb zaug.

reticulated venation

Reticulate venation yog hais txog cov nplooj uas muaj me me, branching veins uas tsim ib lub network qauv. Cov hlab ntsha no muaj ntau dua hauv cov nroj tsuag dicotyledonous, xws li txiv hmab txiv ntoo lossis legumes.

Hom ntawm reticulated venation

  • Pinnate: cov hlab ntsha tseem ceeb nthuav tawm ntawm lub hauv paus ntawm nplooj mus rau qhov kawg, thiab cov leeg leeg thib ob ceg sib npaug tab sis txuas nrog cov leeg tseem ceeb.
  • Palmate: Ntau cov hlab ntsha tseem ceeb nthuav tawm ntawm lub hauv paus ntawm nplooj, zoo li ntiv tes ntawm ib txhais tes. Cov hlab ntsha theem nrab ceg zoo ib yam li pinnate venation.
  • Divergent: ob peb lub hauv paus leeg txuas los ntawm lub hauv paus ntawm nplooj tab sis diverge sai sai, cov hlab ntsha theem nrab branching perpendicular rau lawv.
Cov ntsiab lus tshwj xeeb - Nyem qhov no  Qhov sib txawv ntawm cov tshuaj ntsuab thiab cov nroj tsuag thiab cov ntoo

Xaus lus

Venation yog ib qho tseem ceeb ntawm cov nroj tsuag nplooj, thiab tuaj yeem yog ib qho cuab yeej siv tau zoo hauv kev txheeb xyuas ntau hom. Feem ntau, kev sib xyaw ua ke yog ntau dua hauv cov nroj tsuag monocot thiab reticulate venation yog ntau dua hauv dicots.