The function of a sepal is to protect the developing bud of a flower. Sepals are generally green and leaf-like structures that form the outermost whorl of a flower. They surround and enclose the flower bud and provide protection from physical damage, insects, and other external factors. Additionally, sepals play a role in regulating the opening and closing of the flower bud by expanding or contracting in response to environmental conditions. Once the flower has fully bloomed, the sepals often remain attached, but they are no longer needed for protection.
