Cut out the eye of a potato with some potato attached. Plant in a sterile growing media with the eye pointing up. The plant will grow vegetatively from the eye using the stored food of the stem. The fruit carries out the process of seed production and in some cases dissemination. The fruit is the ripened ovule together with its associated parts.and often protects the seeds.
Some plants have a dry dehiscent fruit which, when split open and helps disseminate seeds.
Some actually hurl the seeds out as the seed surface explodes. Others have wings, or other ways to float or be carried by air. The fruit can provide nutrients to the soil and to a newly germinating seedling. The flower is of utmost importance in reproduction and continuance of the species. Pollination of the flower serves to instigate the fertilization of the ovules.