Uyini umsuka isitshalo?

Kuyini impande? Kuyinto ebaluleke kakhulu isitshalo isitho enikeza ekukhuleni kwayo nomsebenzi. Ukuvela lokhu umzimba iye yahlanganiswa nge esigabeni yentuthuko izitshalo komhlaba.

Umsuka - indima komhlaba sithombo esingatshalwanga ine ukukhula apical futhi isakhiwo osabalalayo.

The main impande imisebenzi yilezi:

• ihange - okungukuthi, bamba isitshalo emhlabathini;
• omnandi - enikwa amanzi phansi nokumbiwa izinto zithutha ngokusebenzisa xylem (amanzi kokuqhuba izicubu) bonke plant izingxenye aboveground ukwenziwa inqubo ye-photosynthesis.

Futhi kuhlelwe izingxenye zasemoyeni zalesi sihlahla izinto eziphilayo, kanye impande hormone, amino acid, alkaloids, et al., Buthelela therein futhi supply izakhamzimba. Impande futhi iyingxenye esiphelweni vegetative izitshalo.

Kanye incazelo yalokho kuyimpande, njalo livela umcabango we uhlelo impande, ezakhiwe zonke izimpande izitshalo aggregate okuyinto. Hlukanisa izimpande main, adventitious kanye lateral.

The main (noma esiyinhloko) impande uthola ukuthuthukiswa yayo namanje ku izimpande sombungu. Ngo eziqhakazayo futhi gymnosperms impande main main, has ukukhula angenamkhawulo futhi geotropism omuhle (ie enikeza isiqondiso esifanele ukukhula kwezitshalo).

izimpande Adventitious kukhona yesibili futhi sikhule kusukela iziqu kanye nezimpande ubudala, noma amaqabunga.

izimpande Lateral sikhule kusukela main futhi isesekeli.

Kuyakuba khona impande uhlelo uhlobo iwumgogodla noma fibrous. Ngezinye umnyombo uhlelo impande impande eyinhloko kakhulu wazwakalisa. izinhlelo ezinjalo babe izitshalo ogxile dicotyledonous (isb izaqathe, Dandelions, ikhabe, ubhekilanga). Lapho fibrous ukukhula uhlelo impande impande main uzwakalise kancane, awusebenzi ivelele phakathi izimpande adventitious (isib impande valerian, psyllium, rye). Lolu hlelo impande ejwayelekile ikakhulukazi ngoba monocots.

Isakhiwo sangaphakathi izimpande

Kuyini impande, kusukela umbono yokulandelana kwayo ngokohlu yangaphakathi? Maphakathi nalo uqhuba uhlelo impande ehlanganisa ngesihlungo amashubhu nempahla. Nikeza izitsha ezokuthutha amanzi kanye nezakhi yahlakazeka kuzingxenye sendawo izimpande izinwele. amashubhu ngesihlungo, kunalokho, is zithutha kusukela izixazululo organic nemizimba yasemhlabeni ukuba impande amaseli. Amaseli zemfundo impande kwezicubu (cambium) ngokuqhubekayo ihlukaniswe futhi unikeze lo ukukhula izimpande ukujiya.

Kuyini impande, futhi zonke zone zako ezisemqoka ezisetshenzisiwe kuyabonakala esigabeni longitudinal.

kwakhiwa Umsuka cap is by lokunameka lendwangu ihlanganisa sokudlondlobala impande, ukuvikela ke njengoba cap kusuka umonakalo ahlukahlukene. nezinye umsebenzi wawo ukugqugquzela ekuqhubekeleni phambili kwezindaba impande emhlabathini.

kuhlukane zone itholakala ngokushesha ngezansi cap impande futhi siqukethe amaseli encane izindwangu yemfundo ukunikeza unomphela ukukhula kwabo kuhlukane impande.

kwakhiwa esisuka wamagatsha zisezincane, amaseli okukhulayo welulela bebheke longitudinal futhi kanjalo enza ukukhula impande ubude.

Uma isitshalo umbe ngokucophelela, ungakwazi ukubona indlela izimpande entwine izinhlayiya inhlabathi, le ngxenye ibizwa ngokuthi endaweni ukuncela. Umbozwe nezinwele impande, ogama umsebenzi ukumunca amanzi izakhi. Izinwele kukhona slime surface.

Ngenhla esifundeni ukuncela zone Kumiswa nge indwangu conductive futhi zakha iningi obuphelele impande. Ukuze izitsha baqede phezulu kanye stem ezihambayo amanzi namaminerali, okuyinto ngokuqondile ziyoncibilika kuwo.

Ezinye izimpande zezitshalo ingashintshwa ukuvela izimo ezingezinhle for ukukhula kwezitshalo kanye nokunikeza yokuhlala kubo.