Lub megagametophyte yog haploid, thiab endosperm feem ntau yog triploid, tsawg kawg yog pib. Txawm hais tias muaj qhov sib txawv hauv keeb kwm, qib ploidy, thiab kev loj hlob tshwm sim, cov xwm txheej thaum ntxov ntawm poj niam gametophyte kev loj hlob hauv ginkgo yog qhov zoo ib yam li kev loj hlob ntawm nuclear endosperm hauv cov noob ntawm angiosperms.
Puas yog Megagametophyte haploid lossis diploid?
Thaum lub sijhawm thib ob, megagametogenesis, qhov tseem muaj sia nyob haploid megaspore tau dhau los ua mitosis los tsim yim-nucleate, xya-cell poj niam gametophyte, tseem hu ua megagametophyte lossis embryo sac. Ob ntawm lub nuclei-lub ncov qaumteb qabteb nuclei-txav mus rau lub equator thiab fuse, tsim ib leeg, diploid central cell.
Y Puas yog Microsporophyll haploid lossis diploid?
Lub microsporangia ntawm gymnosperms tsim ua khub mus rau lub hauv paus ntawm cov nplai, uas yog li hu ua microsporophylls. Txhua lub microsporocytes hauv microsporangia raug meiosis, tsim plaub haploid microspores.
Megagametophyte yog dab tsi?
: tus poj niam gametophyte tsim los ntawm megaspore.
Puas muaj pes tsawg lub hlwb nyob hauv Megagametophyte?
Hauv cov paj ntoo, megagametophyte (tseem hu ua lub embryo sac) yog me dua thiab feem ntau muaj tsuas yog xya lub hlwb thiab yim nuclei. Hom megagametophyte no tsim los ntawm megaspore los ntawm peb qhov sib faib mitotic.
