The transfer of pollen from an anther to a stigma results in pollination.
- A microsporocyte in a microsporangium undergoes meiosis to produce 4 haploid microspores,
which mature into pollen grains each containing a generative cell and a tube cell.
- A megasporocyte in an ovule undergoes meiosis to produce 4 haploid cells,
one of which survives as the megaspore,
which matures into a multicellular
embryo sac containing one egg cell and two polar nuclei.