The transfer of pollen from an anther to a stigma results in pollination.

1. 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.

2. 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.