Kev sib xyaw ntawm ib cov phev nrog lub qe qe qe qe qe qe, los yog ovum (plural ova), yog tus poj niam cev xeeb tub, lossis gamete, hauv cov kab mob aniogamous feem ntau(cov kab mob uas tsim kev sib deev nrog ib tug loj, poj niam gamete thiab me me, txiv neej). Lub sij hawm yog siv thaum tus poj niam gamete tsis muaj peev xwm txav tau (tsis-motile). https://en.wikipedia.org › wiki › Egg_cell
Egg cell - Wikipedia
tsim lub embryo thiab ntawm lwm cov phev nrog lub ncov qaumteb qabteb fusion nucleus kom nce mus rau endosperm ('ob fertilization') tau tshawb pom los ntawm Nawaschin hauv 1898 hauv liliaceous Cov nroj tsuag, Lilium martagon thiab Fritillaria tenella.
Leej twg xub pom fertilization?
keeb kwm ntawm kev tshawb pom los ntawm O. Hertwig (1875-1878) ntawm qhov xwm txheej ntawm fertilization - fusion ntawm qe thiab spermatozoon's nuclei - yog nthuav tawm. Raws li qhov tshwm sim, lub hauv paus ntsiab lus ntawm kev txuas ntxiv ntawm cov qauv tsim hluav taws xob hauv kev tsim embryonic tau tshaj tawm.
Leej twg nrhiav tau ob zaug fertilization hauv angiosperms thiab xyoo twg?
Kev sib xyaw ntawm ib tug txiv neej gamete nrog qe thiab ntawm lwm tus txiv neej gamete nrog cov tub ntxhais kawm theem nrab yog hu ua ob lub fertilisation. Tag nrho cov angiosperms yog tus yam ntxwv los ntawm ob fertilization. Nws tau tshawb pom los ntawm S. G. Nawaschin (1898) hauv Lillium thiab Fritillaria nroj tsuag.
Leej twg nrhiav tau ob zaug fertilization thiab triple fusion?
- Tam sim no, ob lub fertilization thiab triple fusion yog thawj zaug pom los ntawm Nawaschin thiab Guignard.
Leej twg piav qhia txog kev yug menyuam?
fertilization ob zaug yog complex fertilization mechanism ntawm flowering nroj tsuag(angiosperms). Cov txheej txheem no koom nrog kev sib koom ntawm ib tug poj niam gametophyte (megagametophyte, tseem hu ua embryo sac) nrog ob tug txiv neej gametes (phev). … Lub raj paj ntoos pib tso ob lub phev hauv megagametophyte.
