Izindaba Umphakathi, Uhlobo
Izingxenye eziyinhloko ze-imbali - kuba ... izingxenye eyinhloko imbali: pistil kanye stamens
Zezitshalo zibale ezingaphezu kuka-360 eziyinkulungwane izinhlobo phakathi izitshalo zom. Futhi kule ndaba is hhayi kuqeda. Izimbali atholakala kusukela ezishisayo kuya emathafeni - kuzo zonke izindawo zezulu planethi. Ziyakwazi yonke indawo: ezingwadule, amahlathi, emaqeleni, emaxhaphozini nasemachibini, ogwini futhi ezinkangala. Lesi simila izimbali zakha ingxenye enkulu yomsebenzi indaba uHlu Jikelele Lwamakheli. Siyabonga kubo, ekhiqizwa isitshalo ukudla - okusanhlamvu, imifino kakhulu futhi izithelo, izithelo kanye amantongomane.
Abantu yibona ababaluleke kakhulu angiosperms (zom igama lesibili) imbali. Izingxenye eziyinhloko imbali - a pistil kanye stamens. Ngenxa izinqubo eziyinkimbinkimbi impova kanye kokukhulelwa, ne iqhaza zabo imbewu ifomu - ekusekeleni ukuphila kanye ukuvela izitshalo emhlabeni.
Imbali: isakhiwo kanye umsebenzi
izitshalo Ephakeme akhiwe izimpande, sifanamsindvo namahlamvu nezimbali, okuyinto ziyakufinyezwa futhi ilungiswe stem. Umsuka, ekunqandeni kanye namahlamvu - vegetative izingxenye ukuthi banesibopho ukukhula kwezitshalo. Imbali - elementi okuzala ka Izitho zokuzala. Ngokuvamile, izimbali Banamathele pedicels - kangaka okuthiwa eyinkimbinkimbi ingxenye stem ngaphandle amaqabunga. Kwezinye izitshalo peduncles ongekho noma ngokulambisa wazwakalisa. It - izimbali sessile. Peduncle yandisa, ezihambayo phakathi ayesisebenzisa.
Sibala kusukela phansi kuze, kusukela peduncle, izingxenye eziyinhloko imbali. Lokhu ayesisebenzisa, okuyinto isisekelo sokuthethelelwa nokubekwa tincenye letisele imbali. Iyatholakala kungenzeka izimo ezahlukahlukene kusukela oyindilinga, efana magnolia ukuba indiza (camomile) noma ngisho ngilugweda (rosehips), kuqale inkomishi, kwakhiwa sepals okuyinto. ngokuvamile green, kodwa ungakwazi ngokukhazimulayo ezinemibala. Calyx kungenzeka single-irowu noma epicalyx kwakhiwa kusukela esiyindilinga sepals yesibili. Okulandelayo - the Corolla imbali, eyakhiwa amacembe. Ezinhlotsheni eziningi zezimbali Corolla elikhulu: umbala, umbala umfutho, usayizi, inombolo, isimo, ilungiselelo mutual, cleavage amacembe.
I bracts beba semathubeni, okungenani ingxenye enkulu imbali. It gynoecium, kulula - the pistil, lapho lakhiwa ovules nge ayesisebenzisa ukuze gametophyte (megaspores). Kuyinto izitho zesifazane zokuzala imbali. I bracts futhi kuyinto isitho sowesilisa sobulili, iyunithi kwesakhiwo okuyinto - stamen. Ngokuqoqekile, stamens abizwa ngokuthi androecium. I anthers stamen kwakhiwa microspores. Bakha okusanhlamvu impova - gametophyte besilisa.
Izingxenye eziyinhloko imbali
Monoecious futhi dioecious
Mayelana 75% zezintaka angiosperms kukhona hermaphroditic (hermaphroditic) izimbali - benomthwalo stamens futhi pistils. Lezi izitshalo kukhona monoecious (isibonelo - ummbila). Zikhona izitshalo lapho abanye abantu - izimbali staminate kuphela, nabanye - kuphela pistillate. Zibizwa ngokuthi dioecious (isibonelo - Hemp).
Inqubo impova
Ingqikithi iwukuba hit impova impova eningi ngehlazo stamens. Kungaba self-impova, isibonelo zakudala zazo bubonakala izimbali engadalulwanga (ezinye izinhlobo violets, amantongomane, ibhali). Eyesibili indlela - uMhloli Wemiqulu ezenzeka izimbali kakhulu. Ezinye abathwali impova: umoya, amanzi, izinambuzane, izintuthwane, izinyoni.
kokukhulelwa double
Ngezinye confluence gametes besilisa (isidoda) kusukela gamete zesifazane (oocyte) kokukhulelwa kwenzeka. Ukuze wenze lokhu, kudingeka ku inhlamba, okunamathelayo olumanzi uketshezi elimnandi, lihluma impova stamens. Ngo hizinisi lihluma iqala ezikhulayo impova ishubhu - a eside kakhulu futhi mncane kakhulu. It ingena phakathi esibelethweni eduze ovules. Ekupheleni amashubhu emibili exhunywe isidoda.
Kafushane mayelana umsebenzi izimbali
Izimbali izitshalo ku izitshalo iplanethi anesikhundla evelele ekuthuthukisweni yayo, kanye phakathi ezincelisayo nezilwane. Injongo wazo zonke izinto eziphilayo - ukunweba nomndeni wabo, ukudala ukuqhubeka yayo. esifanayo ngesasasa nangokuqiniseka zezimbali. izitho abo okuzala, enza umsebenzi imifanekiso, kukhona izimbali. Izingxenye eziyinhloko ze-imbali - lokhu gynoecium (pestle) kanye androecium (stamen) akha amaseli ubulili - gametes. Ngo izimbali emva impova ocansini - copulation of gametes. Ngenxa kokukhulelwa double of ovules we esibelethweni eba esikhumbeni imbewu inqolobane izakhamzimba. Lena - ukuqala impilo entsha yizizukulwane ezizayo emikhayeni zezimbali.
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