Tus 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 diploid?
Txoj Kev Siv Tau. … thiab txhua lub megaspore tsim ib megagametophyte (poj niam gametophyte), uas thaum kawg tsim cov poj niam gametes (qe). Kev sib xyaw ntawm lub qe thiab cov phev tsim ib lub zygote thiab rov qab qib 2n ploidy.
Megagametophyte yog dab tsi?
: tus poj niam gametophyte tsim los ntawm megaspore.
Megagametophyte muaj pes tsawg lub hlwb?
Hauv cov paj ntoo, megagametophyte (tseem hu ua 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.
YPuas yog angiosperms diploid lossis haploid?
Angiosperms yog cov nroj tsuag tshwj xeeb vim lawv tsim cov noob tiv thaiv. Qhov kev hloov ntawm ntau tiam neeg hauv cov paj ntoo, xws li ntoo qhib thiab paj ntoo, txhais tau hais tias muaj ntau theem uas yog haploid thiab diploid.
