Elaiosomes are little fleshy projections on plant seeds that are irresistibly attractive to ants. When ants discover such seeds, they seize them and carry them away to their nests, where presumably the elaiosomes are fed to the ant larvae. The seeds are then discarded, much as we discard cherry pits, though with many ant species the discarded seeds are carefully removed from the nest and dropped some distance away. With a little luck, some of the seeds are dropped where they can grow into new plants, well away from where they would compete with the parent plants. Myrmecochory is the name given to this extraordinary natural process by which plants make use of the remarkable energy of ants to get their seeds dispersed to new growing sites. See more here.