Molweni nonke! Uhamba njani kumoya wobushushu? Ngokuqinisekileyo ukwandisile ukutya kwakho okungamanzi, akunjalo? Kwaye kukuba umzimba womntu, xa uchanabeke kumaqondo aphezulu obushushu, ukhupha amanzi ngesantya esiphezulu ngembobo yolusu. Ke, xa umoya ugqitha, uyakwazi ukuhlala upholile, okanye ubuncinci uzama. Le nkqubo yaziwa njenge umbilo, kwaye yinto eyenzekayo nakwizityalo.
Ukuba unomdla malunga indlela izityalo ezikhupha ngayo amanziFunda ukuze ufunde ngakumbi ngale nto imangalisayo.
Ukufumana amanzi, sifumana ibhotile okanye iglasi, kodwa izityalo bayifunxa ngeengcambu. Inkqubo yeengcambu inokusasazeka ngokuthe tye, ukuhlala kufutshane nomphezulu, okanye inokuntywila iye emhlabeni ngokuxhomekeke apho kukho ukufuma. Nje ukuba bafumane amanzi, amanzi athunyelwa kwangoko kwizikhondo kunye namagqabi ukuze kwenziwe i-photosynthesis kunye nokuqinisekisa ukukhula kakuhle kwesityalo. Yonke imibulelo ku xylem kunye phloem.
Kodwa ke, ngowuphi umsebenzi onawo kula malungu anamagama angaqhelekanga? Ilula kakhulu kunokuba ibonakala. I-xylem sisicubu somthi esifumaneka ngaphakathi kwesiqu, kwaye yiyo inoxanduva lokuhambisa amanzi, iityiwa zamaminerali kunye nezinye izondlo ibalulekile kwicala elingaphezulu kuwo onke amalungu esityalo; i-phloem, kwelinye icala, Ihambisa incindi eyenziwe, eyilwe zizakha-mzimba eziphilayo nezingaphiliyo eziveliswa ngamalungu efotosinthesiki -oko kukuthi, ezo ndawo zezidalwa zezityalo apho kukho ubukho be-chlorophyll- kwicala elisezantsi elisingise ezingcanjini.
Ukuze uphile kufuneka uphefumle, kwaye kwinkqubo akunakuphepheka ukuphulukana namanzi. Izityalo "zisusa" ngomphunga wamanzi konke okungafunekiyo, uyikhupha ngee-pores (okanye stomata), ebekwe emazantsi amagqabi, njengoko evula.
Yenza olu vavanyo lulandelayo nosapho lwakho ukuqinisekisa ukuba isityalo sakho siyaphefumla: Songa amagqabi ngengxowa yeplastiki ecacileyo. Uyakubona ukuba, xa ixesha elifutshane lidlula, kukho amathontsi amanzi ngaphakathi, uphawu olungathandabuzekiyo lokuba iyaphila, kwaye ke iyaphefumla.
Unamathandabuzo? Ngena contact unathi.