Leaf: umsebenzi inkcazelo kunye nesakhiwo. Imisebenzi iinyanda ezinemigca emagqabini

Kutya nokuphefumla - le misebenzi ibalulekileyo bayakwazi amagqabi zezityalo. Imidiliya kunye Cacti, nengca kunye neenyibiba zamanzi - nganye ezi zityalo kulinika imbono ekhethekileyo amagqabi.

Sheet - inxalenye zisecaleni ihlumelo

Abasindileyo nasiphi isityalo kuquka iindawo yezihlunu - esikhondweni, nto leyo iqhotyoshelwe sheet - inxalenye lateral. Eli lungiselelo ivumela kwimakhishithi ukubamba indawo kakhulu ngokuphathelele ilanga. Imilo nobukhulu amagqabi kuxhomekeka kokusingqongileyo esityalo. Umzekelo, iindawo izityalo efumileyo yendalo sinemibala kunye iincakuba igqabi enkulu ukuba inkqubo komphunga amanzi kakhulu ngakumbi. Ukuba isityalo sikhula kwiindawo kwimozulu eyomileyo, ukufuma yokuba kungekho sizathu ukuphelelwa. Ngoko ke, amagqabi ezi zityalo ziya kuba encinane elibhityileyo. Nantso indlela yobulumko indalo wadala uluhlu, ezo iimpawu ezibalulekileyo izityalo kunye nezilwanyana.

Ukongeza, ezinye amagqabi zingatshintsha imilo kunye neemeko zokusingqongileyo ukutshintsha. Zonke arrowhead owaziwa amanzi iribhoni-ezifana nokumila amagqabi. Kuyimfuneko ukuba lo mzimba ayikwazanga agila uphume amanzi. Xa amanzi esiba ngaphantsi yaye amanye amagqabi kufela endaweni yazo ikhula amagqabi utolo-ezimile. kumphezulu wazo photosynthesis inkulu kakhulu, kwaye ke ngoko, amathuba izityalo okusinda ngeyona landa.

isakhiwo sangaphandle

Le sheet ibandakanya lamina kunye esiqwini, ngazo encamathele esiqwini. Amanye amagqabi ndayihluthwa isiqu kunye nendawo kwawo isebenza kwisiseko blade amagqabi. amagqabi ezinjalo kuthiwa sessile.

blade leaf nganye indlela yalo kwamalungu omzimba. Ngenxa yoko, egudileyo-mbini amagqabi willow, oki - pinnatilobate kunye edandelion - pinnatipartite. Wonke amagqabi palmate aziqhelileyo nezompleyini kunye clover trifoliate.

isakhiwo yangaphakathi

izityalo Function leaf edityaniswe kunye awohluke lwesakhiwo yayo yangaphakathi. Ngaphandle kukuba ijwabu utyalo - isikhumba. Ikhusela sheet kuphela. imisebenzi pathways, komphunga amanzi kunye negesi Exchange lenza yokondliwa - ezizodwa izakhiwo isikhumba. Baye enezinto njani ukuba kuvulwe ize ivalwe kuxhomekeka kwiimfuno zenkqubo amandla.

Ubuninzi noxwebhu ezele yiklorofili kunye nokugcinwa kwizihlunu. Oku kudala kwiivenkile mass amanzi kunye nesisombululo izondlo uphumeza inkqubo elinzima photosynthesis.

Absorption kunye nentshukumo kwezinto - le misebenzi zityalo igqabi zibonelela ilaphu conductive. Bona zimelwe xylem, impahla kunye tracheids leyo eyenzeka ngoku phezulu. Olunye uhlobo kwayo phloem, linoxanduva into malunga yangoku - phantsi. Emva kokuba yonke iswekile ekuveliseni amagqabi ngeendleko amandla elanga, ayimfuneko ukuze onke amalungu zezityalo, kuquka i ingcambu.

Ekubeni ilungu leqela ezifana nemisebenzi izinto sheet sithwele bachasayo, izinto conductive zenkqubo yayo eziqokelelwe ube zizithungu.

Ezi zithinteli wambu iziqalelo izicwili mechanical kwaye kwakha iinyanda fibrovascular. Nje ukubabiza mithambo.

Ngenxa kule sakhiwo, imiqadi conductive emagqabini ukusebenza njengee-arhente intshukumo, kunye exhasayo nobomatshini.

venation

Ezi iinyanda nemithambo kunokubonwa ngeliso lenyama. Kwimakhishithi ipleyiti zakha ipateni eyodwa ekhethekileyo, ngathi lweminwe zabantu. Nanku omnye umsebenzi umqadi emagqabini.

Kukho iintlobo ezininzi venation. Net lula emiselwe bubukho yegazi eziphambili kuzo kumka ezincinci, ukwakha umnatha. Ngokuqinisekileyo wabona lo mfanekiso kwi amagqabi Plum, apricot okanye cherry.

ULily ingqolowa sinemibala ezingcakacileyo, iziqu, okanye kufutshane omnye komnye. Olu hlobo kuthiwa ngaxeshanye. Kodwa imithambo amagqabi inyibiba entilini i Arc - le arc venation.

Kungakhathaliseki ukuba uhlobo lilungiselelo iinyanda ezinemigca emagqabini bakhonza nje, ngaphandle apho ubomi besityalo bekuya kuba yinto nje akunakwenzeka.

iintlobo amagqabi

Amagqabi kwakhona zihlelwa ngokwenani lwe ngamaphiko amagqabi. Nje obizwa ngokuba amagqabi epleyitini enye. Peach, Plum, maple, lungwort - ezi imizekelo yezityalo kunye amagqabi ezilula. Amagqabi ambaxa ezo ngomngampunzi, Anut, ilusini. Ziqulethe iincakuba igqabi ezininzi eziqhotyoshelwe petiole efanayo.

Yintoni umsebenzi we-ikhasi

Xa amagqabi mhlawumbi andise kwezityalo. umongo wayo ukwahlula kuyo yonke ingxenye multicellular ephilayo. Xa ekhaya, ukuze nande okanye Violet Zigokaktus.

Kubalulekile ukuba izityalo kunye transpiration - inkqubo komphunga amanzi. Ukuba ke akwenzeki, kumzimba izityalo uyafa. Ekubeni iqondo lobushushu ngaphakathi onke amalungu ubukumkani isityalo kuxhomekeke lobushushu kokugquma ke, kulula ukuba shushu ngokugqithisileyo.

Amagqabi ezinye izityalo ziyakwazi lokuziguqula. Ngenxa yoko, i-ertyisi ajike ukuqinisekisa ulwalamano yayo ngenkxaso eqinileyo, ameva cactus ekhuselweyo ngokugqithiseleyo ilahleko ukufuma, amagqabi yinyama Aloe UVera ukuqinisekisa unikezelo lwamanzi kunye nezondlo.

sheet Green: izinto zomhlaba ka

Ezinye iimpawu wetshati ezimbini inkqubo eguqulweyo ngokubaxwa i - yefotosinthesis nokuphefumla.

Ukuphefumla - ukufunxeka oksijini carbon dioxide negesi. Oku ngumqathango oyimfuneko ukuba ngobukho zonke izinto eziphilayo kwaye luphawu ukuba abameli kuzo zonke izikumkani indalo.

- photosynthesis ukuyilwa kwezinto eziphilayo ukusuka ezingaphiliyo ngenxa ukukhanya. Le nkqubo kungenziwa kuphela amagqabi, kuba ziqulathe kombala yiklorofili eluhlaza. Ukuze sibe nokumiliselwa kufuna le carbon dioxide, nto leyo ngesi imali eyaneleyo xa uphefumla. A glucose ekudleni ibunjiwe neoksijini yi photosynthesis.

Ngaphandle ubaxo, sinako uvume ukuba iphepha eluhlaza yi-mveliso ngokwenene evelisa na iikhemikhali kuphela, koko ikwabonelela zonke izinto eziphilayo emhlabeni, iimeko eziyimfuneko ukuze ubomi.