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Izindandatho Lonyaka - ke cambium? Ukwakheka fukntsii

Cambium - indwangu, okuyinto amanga phakathi ukhuni phloem. Kwenzeka kuphi? It kuvela kusukela procambium - semithambo izinyanda. Found in neziqu, izimpande izitshalo.

Ekuqaleni, cambium izitshalo ezitholakala kuphela izinyanda semithambo. Lolu hlobo libizwa isithungu. Khona-ke, nezicubu yakha isendlalelo wale misebe medullary, wahlela phakathi imishayo. Lolu hlobo lwe-ugongolo ubizwa ngokuthi cambium.

Zogqinsi akha ugongolo kwakwakhe cambium, likhula lakha isiyingi olulodwa-ungqimba. Nge ekukhuleni izitshalo zibe imishayo entsha nezitho Axial eqala ukukhula e ukujiya, ukwakha izingqimba entsha kwezinkuni. Lona umsebenzi oyinhloko cambium. Irreplaceable.

Ngo cambium ebusika elele, ngakho ukukhula kwezitshalo e ukujiya ngesikhathi abandayo ayenzeki. Mayelana nezinguquko ezenzeka umgqomo batshale dormancy inkathi ebusika izindandatho yonyaka akhiwa.

Umsebenzi, isakhiwo

Cambium - lena indwangu ezibalulekile, ngaphandle lapho ukukhula lwesihlahla ukushuba akunakwenzeka. amaseli Ezazimzungezile - prozenhimnye. Banesimiso ukuma side futhi emikhawulweni bevelled. Ubude Prozenhimnyh idlula ububanzi iseli izikhathi eziningana. Ngo longitudinal cross-Sectional ukuma unxande siyenzeka.

Cambium - namangqamuzana ukuthi akheke eziyinkimbinkimbi. Basuke etholakala ngaphakathi kuyi-nucleus, cytoplasm futhi organelles. Okumangazayo ukuthi ukunyakaza kancane zenzeka cytoplasm. Ijubane incike isizini. Esikhathini ngumgogodla ezikhungweni zomsebenzi cell iqembu eliyinhloko elakha. It libhekene i ijamo side. Amaseli egade bangadla kiyo isitshalo egcinwe izakhamzimba. They ngena plasma cell.

division

Okwamanje esilandelayo. Cambium - yeseli uyakwazi sokuhlukanisa. Inqubo kungenxa cytoplasm.

cambium amaseli ikwazi ukuhlanganyela polar kuphela. Kolunye uhlangothi kule mpi - akha izingodo, futhi ngakolunye - emagxolweni simila. ukuqoqwa Ngokusobala kwenzeka uhlasela. Ngakho-ke, amagxolo omuthi iqukethe esingaphansi izinkuni. Uma cell division waya kulingana, ngemva sokuhlukanisa amagxolo izinkuni zaziyoba esilinganayo.

Phakathi division elilodwa ngqamuzana liyahlukana ku ezimbili. Khona-ke esinye sezici entsha iba cell umzali, kanye nezinye - futhi ahlukaniswe nengxenye, bayilethe phloem noma ukhuni. Inguquko yokugcina kuxhomeke kulokho ingxenye isitshalo amaseli aseduze sihlukaniswe.

Phakathi division kwezinkuni is imali maqondana maphakathi legatsha. A kukakhokho - emaphethelweni.

umsebenzi

Manje abanye amathuba. Akhiwe stem cambium wenza umsebenzi kwezemfundo. Lokhu ikhono lisuselwa isakhiwo eyingqayizivele ungqimba. amaseli yakhe side nge amagobolondo mncane kungaba bahlukanise futhi ukhule. Ngenxa lokhu stem isitshalo sikhula.

izindandatho yonyaka

Wonke umuntu uyazi ukuthi izihlahla babe izindandatho yonyaka. On kubo ungakwazi ukunquma minyaka eminingi kangaka simila. Phakathi nonyaka othile umbuthano kwakhiwa, ie. E. indandatho Wonyaka. kwakhiwa cambium elinikeza ukuqoqwa stem ukukhula ukujiya It is.

Izihlahla nikhula sezulu esipholile, esigabeni sika-amaseli yayo iqala kwentwasahlobo futhi iphela ekwindla. Ukuvuka, isihlahla uqala zikhule ngenkuthalo. Ngalesi sikhathi, i-cambium inamaseli ezinkulu, okuyinto ekupheleni ehlobo sesiwumngcingo, kodwa nge igobolondo obukhulu. Ngenxa yalokho besigaba Ukwakheka kwezitho iringi yonyaka. Ngokusebenzisa Uhlonze lwalo kungenziwa bahlulelwe ukukhula izingodo ngonyaka. indandatho ngamunye ngonyaka siqukethe ihlobo nobusika ungqimba. Bona zihlukaniswa ngemibala: egqamile - kuleli hlobo, futhi omnyama - ubusika.

Lapho sokuhlukanisa cambium amaseli akha ukhuni amagxolo. Eyokuqala wenza umsebenzi Stocking up nebhalsamu namagxolo - ni oyisivikelo sawo. Lezi izingxenye zalesi sihlahla benziwe ngezinto ezithile izinhlobo amaseli. Phakathi yokukhula element ngayinye efeza indima yayo eqondile ekuthuthukiseni zalesi sihlahla.

Ngamafuphi, cambium kuyinto izicubu isitshalo ezibalulekile. bamane ngeke ibe khona ngaphandle kwakhe.

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