Isityalo ngasinye ezikhoyo, ngendlela efanayo nasemzimbeni womntu, zichaze iindawo ngokuchanekileyo kwaye zonke zinomsebenzi othile. La malungu ingcambu, amagqabi kunye nesiqu.
Isiqu si-axis esinendawo leyo, zihlala zibhabha emoyeni, zee-cormophytes, ukongeza ekubeni lilungu elo ikhathalela ukugcina amagqabi kunye neentyatyambo kunye neziqhamo kwindawo yazo. Isikhondo sahlulwe kwingcambu kuba sinamaqhina apho kufakwa kuwo omabini amagqabi kunye nee-axillary buds, kwaye ngenxa yokuba ine-geotropism engathandekiyo, ethetha ukuba inako ukukhula ngokuchasene namandla omxhuzulane.
Ngaphakathi kwee-cormophytes kukho iintlobo ezinesiqu esinye, Esiqu sinesiqu esingenamasebe, njengezityalo ezineziqu ezininzi ezinesiqu esinamasebe ngeendlela ezahlukeneyo kuxhomekeke kumsebenzi owenziwe ziimistim.
Ngokwemvelo, iziqu zenziwe ziinkqubo ezintathu zethishu ezibizwa ngokuba i-dermal, esisiseko kunye ne-fascicular okanye ye-vascular.
Ngokwenxalenye yayo, iiyantlukwano ezenzeka kubume besikhondo kwiindidi ezahlukeneyo kunye ne-taxa enkulu, zibandakanya umahluko okhoyo kulwabiwo olunxulumene nesihlunu semithambo kunye nesisiseko. Ngokukwanjalo, ukukhula okukude kwesiqu kuqala ukusuka Umsebenzi owenziwa zii-apist meristems, kunye nokwandiswa okulandelayo kwee-internode, ezaziwa njenge "Ukukhula okuphambili".
Oku kukhula kubonakala kwi ukwanda kwesiqu, oku kusisiphumo somsebenzi owenziwe ziimigangatho zesekondari (i-phellogen kunye necambium). Oku kukhula kuhlala kuqhelekile kungekuphela kwii-gymnosperms, kodwa nakwezona zininzi ze-shrub kunye ne-eudicotyledons, Isiphumo ngomthi.
Kukwafanelekile ukukhankanya ukuba iziqu zihlelwe ngokweendlela ezahlukeneyo, kwa ezo zisuka kukungaguquguquki abanako, kuguqulelo abanalo xa behlengahlengisa iintlobo ezahlukeneyo zendalo.
Imisebenzi yeziqu zesityalo ibonakala ibalulekile kuphuhliso lwayo olufanelekileyo. Ngokubanzi, le misebenzi inxulunyaniswa nazo zombini ukuthuthwa kwamanzi kunye nezondlo kwizityalo, kunye nenkxaso yazo yolwakhiwo.
Inkxaso yolwakhiwo ebonelelwa ngeziqu yenzelwe ukwenza iintyatyambo, amagqabi kunye neziqhamo zezityalo hlala endaweni kwaye ungawi phambi kwexesha lakho. Nangona kunjalo, kukho iziqu ezithile ezikhula phantsi komhlaba; Ezi zihlala zingenawo umsebenzi wokuxhasa, kodwa endaweni yoko ngumanyano lwamalungu ahlukeneyo ezityalo.
Ngakolunye uhlangothi, ukuthuthwa kwezondlo kujika kube ngumsebenzi onefayile ye- ukubaluleka okukhulu. Kukwenzeka okufanayo, kuba isiqu sinenkqubo yemithambo yemithambo enxibelelana namacandelo ahlukeneyo ezityalo, ukwenzela ukuvumela ukuhamba kwezinto ukuya nokubuya ezingcanjini, amagqabi, iintyatyambo, iziqhamo kwaye kunjalo, ngesiqu ngokwayo.
Kufuneka kuqatshelwe ukuba iziqu zine unxulumano olusenyongweni amagqabi esityalo, ebonakaliswa ngokuqhubeka okukhoyo phakathi kweemithambo zemithambo enamagqabi kunye nesiqu.
Lo mbutho uhlala waziwa phantsi kwegama "isiqu", Kwaye ngaphakathi kwawo la malungu mabini athambileyo ajikelezwe. Kwakhona isiqu ngu Inxalenye ebalulekileyo kubume bezityalo, ngaphandle kwayo ngekhe babenakho ukuyiphuhlisa.