Parallel venation ntawm nplooj tshwm sim ntau zaus hauv qhov xwm txheej thiab yog qhov tseem ceeb ntawm kev faib cov nroj tsuag. Rau cov kab mob twg nws yog qhov raug thiab nws cov yam ntxwv zoo li cas, peb yuav xav txog hauv peb tsab xov xwm niaj hnub no.
Vim yog dab tsi
Nplooj yog lub hauv paus tseem ceeb ntawm cov nroj tsuag uas ua haujlwm tseem ceeb. Ua ntej tshaj plaws, qhov no yog kev siv cov txheej txheem ntawm transpiration thiab photosynthesis. Cov tshuaj uas tsim nyob rau hauv cov ntaub ntawv no txav raws ib tug tshwj xeeb nplooj system. Nws yog ib qho kev sau ntawm cov khoom ntawm cov ntaub so ntswg los yog, yooj yim dua, cov leeg. Lawv tuaj yeem muab tso rau hauv ib qho kev txiav txim sib txawv. Qhov chaw ntawm lawv qhov chaw hu ua venation.
Venation types
Muaj peb hom venation. Cov no yog mesh, arc thiab parallel. Tsis tas li ntawd, nyob rau hauv qhov xwm txheej muaj kev sib raug zoo ntawm cov duab ntawm nplooj nplooj thiab qhov xwm ntawm qhov chaw ntawm cov leeg. Xav txog qhov kev cia siab ntawm qhov piv txwv ntawm ntau yam nroj tsuag. Piv txwv li, palmate nplooj ntawm maple muaj ib tug reticulate venation, nyob rau hauv uas lub ntsiab vascular-fibrous.nqaj. Cov leeg ntawm qhov kev txiav txim thib ob thiab thib peb tawm ntawm nws. Tib txoj kev npaj yog raug rau cherries, txiv duaj, sawv hips, taum mog, taum, qos yaj ywm, txiv lws suav, cabbage thiab ntau lwm yam dicotyledonous nroj tsuag. Nplooj ntawm cov duab linear muaj cov qauv sib txawv ntawm kev coj ua. Yog tias cov hlab ntsha tseem ceeb tsis txawv, thiab cov neeg nyob sib ze tawm ntawm lub hauv paus ntawm nplooj los ntawm ib qho taw tes hauv arcs, thiab tom qab ntawd koom nrog nws sab saum toj, ces qhov no yog qhov piv txwv ntawm hom thib ob. Nws yog ib txwm, piv txwv li, rau lily ntawm hav thiab plantain. Parallel venation kuj tshwm sim nyob rau hauv kab tawm.
Parallel nplooj venation
Twb los ntawm lub npe nws pom tseeb tias cov leeg ntawm cov nplooj no yog sib npaug rau ib leeg. Lawv khiav los ntawm ntug ntawm lub phaj raws nws. Parallel venation yog cov yam ntxwv ntawm cov nroj tsuag monocot. Cov no suav nrog ntau tus neeg sawv cev ntawm cereal, dos thiab lily tsev neeg. Lub ntug ntawm lawv cov nplooj nplooj tsis tau muab tshem tawm, tab sis yog kiag li txawm, uas ua rau muaj peev xwm ua tau ib qho kev sib txuas ntawm cov leeg.
Nroj tsuag nrog kev sib luag venation
Ntxiv rau qhov sib npaug ntawm qhov sib npaug, cov nroj tsuag monocotyledonous yog qhov tshwm sim los ntawm kev muaj lub embryo nrog ib cotyledon, cov hauv paus hniav fibrous, tsis muaj cambium nyob rau hauv qia cov ntaub so ntswg, thiab qhov chaw mos nplooj. Ntawm cov neeg sawv cev ntawm qhov systematic unit, nyom yog feem ntau, tsawg zaus - shrubs.
Npuag lossis bluegrass nroj tsuag yog qhov tseem ceeb ntawm kev lag luam ntawm lawv. Pob kws, nplej, rye, barley, mov - tag nrhocov qoob loo nto moo. Couch nyom, bluegrass, timothy nyom, bonfire yog cov nroj tsuag steppe uas zoo haum rau lub caij ntuj no txias nrog me ntsis daus thiab kub qhuav summers. Muaj ntau cov qoob loo muaj txiaj ntsig ntawm cov nplej.
Lilies, uas muaj txiaj ntsig zoo nkauj thiab zib ntab nroj tsuag, kuj muaj cov neeg sawv cev nrog qhov sib npaug. Lawv muaj ib qho tseem ceeb hauv av hloov kho ntawm tua - lub teeb. Nrog rau nws, cov nroj tsuag no rov tsim dua vegetatively thiab ua rau lub sijhawm qhuav thiab khov.
dos kuj tau dav dav hauv cov xwm txheej. Feem ntau lawv loj hlob nyob rau hauv meadows thiab hav zoov clearings. Vim muaj qhov muag teev, lawv kuj tuaj yeem muaj nyob rau hauv cov xwm txheej ntawm steppes, savannahs thiab suab puam.
Yog li, qhov sib npaug venation yog qhov zoo rau monocots. Hom kev npaj ntawm cov khoom ntawm nplooj yog sawv cev los ntawm vascular-fibrous bundles, uas nyob rau hauv lub phaj ntawm linear nplooj.
