What is the function of the corolla of a flower?

1.) The main function of the corolla, which is all the petals of the flower that make up the inner part of the double perianth, is to protect the generative or reproductive organs of the plant during flowering.
2.) In the vast majority of flowers, it is the corolla that is the most noticeable part of the plant, which attracts various pollinating insects, whose help is necessary for full cross-pollination.
3.) The corolla also protects the pistil and stamens. For example, on hot days, reflecting part of the spectrum of the sun’s rays, the corolla does not allow the pistil and stamens to overheat, and at night, closing its petals, does not allow them to overcool, and also perish if cold rain or dew falls.