Why don't bryophytes undergo meiosis during gamete formation?
Dear student
In bryophytes, the gametes are produced by haploid gametophyte. Meiosis is a reductional division (reduces chromosome number to half) and occurs in diploid cells/parts to produce haploid gametes. Since, the gametophyte is already haploid, hence, it does not produce gametes by meiosis instead undergoes mitosis to produce haploid gametes to maintain chromosome number in them. These gametes then fuse to form diploid zygote.
Regards
In bryophytes, the gametes are produced by haploid gametophyte. Meiosis is a reductional division (reduces chromosome number to half) and occurs in diploid cells/parts to produce haploid gametes. Since, the gametophyte is already haploid, hence, it does not produce gametes by meiosis instead undergoes mitosis to produce haploid gametes to maintain chromosome number in them. These gametes then fuse to form diploid zygote.
Regards