The relationship exhibited when a bee flies flower to get nectar is called mutualism. Mutualism is a symbiotic relationship in which both participating species benefit from one another. In this relationship, the bee relies on the flower for food and the flower relies on the bee for pollination. The bee collects the nectar from the flower, which provides it with energy, while the bee helps the flower reproduce by transferring pollen from one flower to another. This relationship is essential for the survival of both species, and it is an example of how two species can work together to benefit one another.