Plants concentrate fructose into fruit—apples, cherries, kiwis, and more—that they dangle from their branches. The purpose of fructose is to make fruit taste irresistible to animals. Why do plants want their fruit to be irresistible? Because they hide their seeds in them. It’s key to propagation: plants hope that animals will eat their fruit and their seeds will go unnoticed until they come out their eater’s other end. That’s how seeds spread far and wide, thereby ensuring plants’ survival.
