transfer of pollen from anther to stigma, germination of pollen grains, growth of pollen tube in ovule, visiting flowers by insects" /> transfer of pollen from anther to stigma, germination of pollen grains, growth of pollen tube in ovule, visiting flowers by insects" /> transfer of pollen from anther to stigma, germination of pollen grains, growth of pollen tube in ovule, visiting flowers by insects" />