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Vim li cas fertilization ob zaug hauv cov nroj tsuag?

Cov txheej txheem:

Vim li cas fertilization ob zaug hauv cov nroj tsuag?
Vim li cas fertilization ob zaug hauv cov nroj tsuag?

Video: Vim li cas fertilization ob zaug hauv cov nroj tsuag?

Video: Vim li cas fertilization ob zaug hauv cov nroj tsuag?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Lub Xya hli ntuj
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Ntawm ob lub phev hlwb, ib tug phev fertilizes qe cell, tsim ib tug diploid zygote; Lwm cov phev fuses nrog ob lub ncov qaumteb qabteb qaumteb qabteb, tsim ib tug triploid cell uas loj hlob mus rau hauv lub endosperm Ua ke, ob lub fertilization txheej xwm nyob rau hauv angiosperms yog hu ua ob fertilization.

Vim li cas fertilization tseem ceeb rau cov nroj tsuag?

Dab tsi yog qhov tseem ceeb ntawm kev ua qoob loo ob? Muab ob npaug rau fertilization muab kev txhawb zog rau cov nroj tsuag thaum zes qe menyuam loj hlob mus rau hauv cov txiv hmab txiv ntooVim yog kev sib xyaw ntawm txiv neej thiab poj niam haploid gametes, ib qho diploid zygote tsim. Lub zygote loj hlob mus rau hauv lub embryo, ua rau ib tug tshiab cog.

Vim li cas fertilization hauv paj ntoo hu ua ob fertilization?

a) Nyob rau hauv ob txoj kev fertilization, ib qho ntawm ob lub paj ntoos nuclei fuses nrog qe thiab lwm qhov nrog polar nucleiLi no, muaj ob hom fusion, ib qho yog fertilization thiab lwm yam yog triple fusion. Yog li, fertilization nyob rau hauv angiosperm yog hu ua ob fertilization.

Yuav ua li cas muab ob npaug rau fertilization piav nrog daim duab?

Cov txheej txheem ntawm fusion ntawm ib tug txiv neej gamete nrog lub qe nrog rau kev sib koom ua ke ntawm tus txiv neej thib ob gamete nrog ob lub hauv paus ntsiab lus los yog cov nucleus thib ob hu ua ob lub fertilisation. Tawm ntawm ob tug txiv neej gametes, ib tug fuses nrog lub qe mus nqa tawm generative fertilization los yog syngamy.

Leej twg yog lub npe thib ob fertilization?

theem thib ob ntawm fertilization yog karyogamy, fusion ntawm nuclei los ua ib tug diploid zygote.

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