Meiosis tshwm sim hauv sporangia, nyob rau hauv qab ntawm nplooj sporophyte. Tom qab cov spores raug tso tawm lawv germinate, faib los ntawm mitosis thiab loj hlob mus rau hauv lub plawv zoo li gametophytes. … Lub embryo loj hlob mus rau sporophyte, tseem txuas nrog gametophyte.
Qhov twg ntawm Pteridophyte yog mitosis tshwm sim?
Nyob rau hauv lub neej haplontic, mitosis tshwm sim nyob rau hauv the haploid (n) theem uas yog Nyob rau hauv lub neej diplontic, lub diploid theem feem ntau yog multicellular, thiab meiosis tshwm sim multicellular, thiab cov diploid (2n) theem yog lub zygote uas undergoes meiosis.
YPteridophytes pom Sporic meiosis?
Pteridophytes qhia sporic meiosis, i.e. tsim cov spores los ntawm meiosis, uas germinates kom nce mus rau gametophytes. Spores yog tsim nyob rau hauv lub sporangia los ntawm meiosis nyob rau hauv spor niam hlwb.
Meiosis tshwm sim nyob qhov twg hauv gymnosperms?
Meiosis tshwm sim hauv paj paj (txiv neej) thiab hauv ovulate (poj niam) cones los yog strobili lossis sporangia ntawm cov nplooj tshwj xeebuas yog tsim rau ntawm sporophyte.
Puas meiosis tshwm sim hauv zygotes?
Gametes fuse hauv fertilization los tsim ib lub diploid zygote, tab sis zygote tam sim ntawd undergoes meiosis los tsim haploid spores. … Fertilization ua ib tug diploid zygote uas undergoes mitosis los tsim lub diploid version ntawm cov nroj tsuag, hu ua ib tug sporophyte, uas ces tsim haploidspores by meiosis.
