Fruit development stages refer to the various phases a fruit undergoes from fertilization to maturity. The process begins with pollination, where pollen fertilizes the ovule, leading to the formation of a seed. Following fertilization, the ovary starts to swell and develop into a fruit, which protects the seeds and aids in their dispersal. As the fruit matures, it goes through several stages, including fruit set, where the fruit begins to grow, and ripening, where it changes color, texture, and flavor. These stages are crucial for ensuring that the seeds are viable and can successfully germinate into new plants.