Qhov sib txawv tseem ceeb ntawm ob qhov fertilization thiab triple fusion yog tias ob lub fertilization tsim cov noob thiab txiv hmab txiv ntoo thaum triple fusion tshwm sim hauv endosperm, uas nourishes lub embryo.
Muab ob npaug rau fertilization yog qhov tshwj xeeb ntawm cov paj ntoo. Nws yuav siv sij hawm qhov chaw thaum lub sij hawm kev sib deev reproduction ntawm flowering nroj tsuag. Ob qhov sib cais nuclear fusions tshwm sim hauv poj niam gametophyte, uas yog hu ua embryo sac. Ib tug phev nucleus fuses nrog lub qe cell thiab tsim ib zygote. Lwm cov phev nucleus fuses nrog ob tug polar nuclei. Triple fusion yog qhov sib xyaw ntawm cov phev nucleus nrog ob lub ntsiab lus ntawm lub cev kom tsim tau ib qho triploid endosperm. Yog li ntawd, triple fusion yog ib qho ntawm ob feem ntawm ob chav fertilization, thiab nws tshwm sim thaum lub sij hawm muab ob npaug rau fertilization.
YYuav Ua Li Cas Ob Qhov Fertilization?
fertilization ob zaug yog ib txoj kev sib deev nyuaj ntawm angiosperms (flowering nroj tsuag). Ob chav fertilization tshwm sim nyob rau hauv cov poj niam gametophyte (embryo sac) ntawm angiosperms. Ob txheej xwm fertilization tshwm sim nyob rau hauv ob fertilization. Thaum lub sij hawm fertilization ob, ib tug phev nucleus fuses nrog lub qe cell (syngamy) thiab tsim ib tug diploid zygote thaum lwm cov phev nucleus fuses nrog ob tug polar nuclei ntawm lub loj central cell thiab tsim ib tug triploid uas tsim mus rau hauv ib tug endosperm.
Daim duab 01: Ob npaug Fertilization
Thaum kawg ntawm ob qhov fertilization, zygote thiab endosperm raug tsim. Tom qab ob zaug fertilization, fertilized ovule dhau los ua noob. Cov ntaub so ntswg ntawm zes qe menyuam ntim cov noob los ntawm kev ua cov txiv hmab txiv ntoo.
Triple Fusion yog dab tsi?
Triple fusion yog ib qho ntawm ob qhov xwm txheej fertilization ntawm ob zaug fertilization ntawm angiosperms. Nws yog hais txog fusion ntawm ib tug phev nucleus nrog ob tug polar nuclei nyob rau hauv tus poj niam gametophyte. Nws tsim ib lub cell triploid (3n). Txij li thaum peb haploid nuclei raug fused, qhov kev tshwm sim no hu ua triple fusion. Qhov no triploid nucleus tsim mus rau hauv ib qho endosperm. Endosperm muab cov khoom noj rau lub embryo tsim. Yog li ntawd, kev loj hlob embryo tau txais cov khoom noj los ntawm endosperm, thiab nws yog ib qho tseem ceeb rau cov txheej txheem angiosperms. Qhov no ua rau muaj kev vam meej ntawm cov noob angiosperm.
Dab tsi zoo sib xws ntawm Ob Fertilization thiab Triple Fusion?
- fertilization ob zaug thiab triple fusion yog qhov tshwj xeeb ntawm angiosperms lossis paj ntoo.
- Ob leeg tshwm sim hauv lub zes qe menyuam ntawm lub paj.
- Triple fusion yog ib feem ntawm ob qho kev fertilization.
- Nyob rau hauv ob txoj kev, phev koom nrog, thiab nuclei fusions tshwm sim.
Qhov txawv ntawm Ob Fertilization thiab Triple Fusion yog dab tsi?
Muab ob npaug rau fertilization yog hais txog ob qhov xwm txheej fertilization tshwm sim thaum lub sij hawm kev sib deev ntawm cov nroj tsuag paj thaum lub sij hawm triple fusion yog ib qho ntawm ob qhov xwm txheej fertilization ntawm ob lub fertilization. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm ob chav fertilization thiab triple fusion. Ntxiv mus, muab ob npaug rau fertilization ua noob thiab txiv hmab txiv ntoo thaum triple fusion tshwm sim nyob rau hauv lub endosperm uas nourishes lub embryo tsim. Yog li, qhov no kuj yog qhov sib txawv tseem ceeb ntawm ob qhov fertilization thiab triple fusion.
Hauv qab infographic teev qhov sib txawv ntawm ob qhov fertilization thiab triple fusion hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Ob Fertilization vs Triple Fusion
Nyob rau hauv ob lub fertilization, ib tug poj niam gametophyte fertilizes los ntawm ob tug txiv neej gametes. Hauv lwm lo lus, ob qho xwm txheej fertilization tshwm sim los tsim ob lub qauv; zygote thiab endosperm nyob rau hauv ob fertilization. Lub hom phiaj ntawm ob txoj kev fertilization hauv angiosperms yog tsim cov noob thiab txiv hmab txiv ntoo. Triple fertilization yog ib qho ntawm ob qhov xwm txheej fertilization. Nws hais txog kev sib xyaw ntawm cov phev nrog ob lub ntsiab lus ntawm lub cev. Nws ua rau lub cell triploid tsim rau hauv endosperm. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm ob chav fertilization thiab triple fusion.
