The flower is the plant organ that performs the function of reproduction. Several of the elements rise to the fruit if fertilization occurs. The flowers are present in angiosperm plants (plants with protected eggs in the ovaries) and consists of five parts or cycles: the receptacle, sepals, which form the calyx, the petals forming the corolla, the stamens, which produce the pollen and the pistil, where the ovary and the eggs within it. After fertilization, the eggs from the seeds develop and the flower turns into fruit through the modification and thickening of some of its parts. The purpose of this transformation is to protect the seeds whose function is to generate a new plant. This requires that the seeds make contact with the ground. In some cases, the fruit falls and opens or breaks down, releasing the seed. In other plants the dispersion is carried through the air, or some fruit-eating animals, attracted by the sweet pulp and vivid colors of these, and then deposited on earth droppings containing seeds. Among the fruits used by humans are the spices like pepper, vanilla and cumin vegetables such as squash, tomatoes and green beans and fruits, like apple, melon and orange. There are nuts that are called grains, like corn, wheat, rice, barley and rye.
Each floral cycle plays a specific role: protection (cup), attraction (corolla) or reproduction (androecium and gynoecium).