Pollination is the transfer of pollen grains from a flower’s anthers to the same or another flower’s stigmas. Pollens are moved from flower to flower by pollinators, such as butterflies, bees, beetles, moths, bats and birds. The wind also helps in pollination.
Pollination leads to fertilization, which is the fusion of nuclei in the ovule with nuclei from the pollen grain. After successful fertilization, the flower starts to develop seeds. The production of seeds and fruits is contingent on pollination.
Some plants develop seeds through self-pollination, wherein the same plant possesses both pollen and pistil. Others need cross-pollination, wherein pollen and pistil come from different plants. Most plants need the help of pollinators to move pollen to the pistil.