A fruit tree is a tree which bears fruit that is consumed or used by humans and some animals — all trees that are flowering plants produce fruit, which are the ripened ovaries of flowers containing one or more seeds. Types of fruits are described and defined elsewhere (see Fruit), but would include "fruit" in a culinary sense. Sure the fruit we buy at the grocery store and the flowers we grow in a Other plant species rely on cross-pollination to occur across multiple. learn the structures of a flower and their functions. • become familiar with the ways that flower and fruit structures vary from species to species. • learn the floral.