Sepals are the outermost parts of a flower, typically green and leaf-like in appearance. They serve to protect the developing bud before it opens and can also support the petals once the flower blooms. In many plants, sepals are arranged in a whorl and can vary in size, shape, and color. In addition to their protective role, sepals can play a part in attracting pollinators. Some flowers have colorful sepals that mimic petals, helping to draw in bees, butterflies, and other pollinators. Overall, sepals are an essential component of a flower's structure and function.