Ndi cambium mitengo chiyani?

Nthawi zambiri pali mitengo ndi zomera herbaceous ndi mitengo ikuluikulu bulky ndi zimayambira. N'chifukwa chiyani mitengo kukula mu kupingasa? Kodi cambium, kuwerenga nkhaniyi.

cambium

Kodi ndi cambium? Izi wosanjikiza woonda kwambiri minofu maphunziro, i.e. moyo maselo amatha kugawanitsa ndi kukula makulidwe. The chifukwa cha njira izi ndi mapangidwe maselo nkhuni ndi phloem. Mu chitukuko cha cambium kwagona maselo bast kunja ndi mitengo - mkati. Malowa ali pamtunda pansi makungwa.

Kodi cambium, ndipo kodi izo ili? Awa ndi maselo a nsalu maphunziro. Mu wosanjikiza ili pamwamba wina ndi mnzake ndi wachibale mbiya - pakati pa mitengo ndi khungwa. Mu nyengo kotentha nthawi yozizira amaundana ndi cambium, ndipo m'chaka - zochita zake anayambiranso. Choyamba, nagalamutsa m'madera ana a mtengo, ndiyeno - mu okalamba.

Kapangidwe ka maselo cambium

Kodi cambium, nanga kapangidwe ka maselo ake? Ndi ochepa, elongated tetrahedral mawonekedwe. Malekezero a maselo ndi tapered. Kutalika kungakhale osiyana: mu dicotyledons - theka millimeter, kuchokera gymnosperms - zitatu ndi theka millimeters. Selo ladzala ndi kuli granular plasma ndi phata spindle woboola pakati. Nthawi zina lili wowuma. The casing si ouma, zofewa mofewa kwambiri. Koma m'nyengo yozizira makoma ake thicken. Maselo ndi makhalidwe a mtundu ku zigawo wina ndi zitatu, koma izi imatengedwa cambium wosanjikiza denga wina.

Monga cambium ndi aumbike?

Amakhala ndi maselo akuchikazi: kotenga, kufika kutalika millimeters angapo ndipo ndi malekezero bevelled, ndi waufupi zozungulira, amene m'magulu pachimake ndi cheza ndi kudutsa cambium lapansi.

Kodi cambium zigawo maselo kodi muli? Mu mzere umodzi wokha wa maselo cambium, omwe ndi mbale khungu la woyendera nthambi mndandanda cambial. Maselo amenewa ndi ofanana kwambiri maselo a zigawo zina, chotero sangathe kuwasiyanitsa. Komabe, kupanga maselo cambium zosiyana kwa amene amatha kachiwiri gawo pansi nyengo yabwino.

Chifukwa cha malamulo njira nkhuni chitukuko ndi mapangidwe zogwirizana maselo cambium maselo ena zolinga zosiyanasiyana. Izi ndi gulu labwino kwambiri. Loyandikana maselo kuti tilankhule wina ndi mnzake, chifukwa iwo amapanga mtundu wawo watsopano wa khungu pa nthawi yakutiyakuti. Cambium moyo mpaka mtengo ndi moyo.

Kuswana, cambium selo ukugawa awiri. khungu limodzi ndi woonda-mipanda, izo ili kunja kwa mbiya, ndi zina - ouma, ndi makoma wandiweyani, apita pakati. Yaikulu selo ndi chipolopolo woonda, ndipamene masika cambium. Choncho, nkhuni nthawi ino ya chaka amatchedwa masika. Mu nyengo kukula, pamene masamba kukhala ndi mphukira anapanga cambium flattened maselo ndi makoma wandiweyani. Wood otchedwa chilimwe anapanga pa nthawi ino. Pa kukula mphete mawonekedwe nyengo pachaka, amene angathe kudziwa zaka za mtengo.

Kapangidwe ka mkati mwa tsinde la

zomera Herbaceous ndi mitengo ndi dongosolo wosiyana kwa mbali imeneyi ya tsinde la. Kodi ndi cambium mitengo? zomera Dicotyledonous ndi ndi nsalu maphunziro, wotchedwa cambium, amene iwo kukula makulidwe. Chitsanzo ndi mitengo monga mapulo, laimu ndi ena. Zomera, monocots cambium si choncho makulidwe a pafupifupi osati kuchuluka.

Zake dicots kupanga zigawo concentric: nkhuni, cambium, phloem. Pakati ndi pakati maselo tsinde amene akhale kudzikundikira zakudya. Maselo a pachimake zotumphukira gawo n'chochepa, ndi makoma awo - wandiweyani.

Wood ndi akunja pakati gawo. Ziwiya ndi njira. Malinga ndi iye akulowa madzi masamba ndi kumvetsera mizu yake. Pamodzi ndi mtengo madzi afika zakudya zonse. Wood lili minofu lotchedwa ulusi nkhuni. Chifukwa thunthu lawo lili durability. Nsalu chachikulu ndi nkhuni parenchyma. Ndi udindo kubwezeretsa m'matangadza chakudya.

Cambium monocots ndi dicots

ndi cambium zomera chiyani? Mu monocots Flora ndi pafupifupi kumeneko. Mukhozanso procambium akutembenukira ku pulayimale nsalu conductive. zomera Dicotyledonous amatha kupanga procambium cambium, tingadzifunse kopita sekondale zimakhala conductive. Chifukwa - mapangidwe yachiwiri dongosolo tsinde.

ndi cambium zomera chiyani? Photo: onani pansipa. Cambium wa herbaceous zimayambira ya zomera dicotyledonous ali ndi ntchito imodzi kukula nyengo. Kamodzi yophukira amabwera, maselo ake kukhala minofu okhazikika. zimayambira Cambium zomera zake kugwira ntchito moyo wake wonse, mpaka pamene anafa mtengo. Koma m'nyengo yozizira ndi yophukira kwa cambium amayamba nthawi yopuma.

Herbaceous dicots: thunthu la tsinde la

Kapangidwe anatomical zomera mawu structural ndi pulayimale ndi sekondale. Mapangidwe kapangidwe chachikulu limapezeka pa siteji oyambirira a chitukuko cha tsinde la.

Koma mofulumira amasuntha mu siteji yachiwiri, monga cambium nthawi limayamba ntchito zake. Kapangidwe Secondary amakhala ndi mitundu itatu: mtengo, Transitional ndi nonbeam.

Puchkova dongosolo la zomera

Yodziwika ndi kuika cambium matabwa osiyana omwe oyenerera mu zimayambira mu mzere pa bwalo. Mapangidwe yothandizira cambial mphete pokhalabe kapangidwe mtengo. Zimenezi patsogolo mapangidwe cambium interfascicular amene molumikizana ndi mphete chachikulu aumbike mwa mtengo ndi. Nthawi zina mtengo cambium bwino kumatanthauza, zomwe si bwino kusiyanitsa zofunika kwa kapangidwe yachiwiri.

Nonbeam dongosolo la zomera

Yodziwika kuti, mosasamala kanthu za dongosolo yaikulu ya tsinde, pansi pa chikoka cha kusintha sekondale akhoza kupanga zomera ndi kapangidwe yemweyo: wamba cambium mphete.

Kapangidwe anatomical pachaka zimayambira mitengo ndi zomera herbaceous mukufuna: conductive dongosolo tinthu mtengo alibe dongosolo. Mbali awo zimasiyanitsa ndi mapangidwe minofu ❖ kuyanika chifukwa cha ntchito wolimba wa cambium lapansi.

Pamene cambium akuyamba kugwira ntchito, mu zimayambira wa mbali zosiyanasiyana anapanga chiyambi sekondale, zomwe zingatithandize kukhala mofulumira mwapang'onopang'ono yaikulu ya. ndi cambium wa zamoyo chiyani? Tamasulira kuchokera ku Latin, ndi kuuzana maselo tsinde la mbewu pakati pa phloem ndi nkhuni.

Xylem (nkhuni) ndi phloem (phloem) anapanga cambium nthawi sali yemweyo, chifukwa mu kachigawo misa ya nthambi xylem ndi thunthu, ndi nusu la phloem - makungwa, ndi wosanjikiza ake woonda. yogawa amenewa maselo ndi chifukwa selo limodzi lokha yogawa limafanana ndi bast maselo kwambiri nkhuni. Kotero ine analamula cambium.