What term is used to refer to the whorl of petals that surrounds the stamens in a flower?

The term used to refer to the whorl of petals that surrounds the stamens in a flower is "corolla." The corolla is an important part of a flower's anatomy and serves multiple functions, including attracting pollinators with its color and fragrance. Each petal in the corolla is typically brightly colored, which helps to draw in bees, butterflies, and other insects that assist in the pollination process.

In contrast, other parts of the flower listed in the options serve different roles. The pistil is the female reproductive part that includes the ovary, style, and stigma; the stamen is the male reproductive part composed of the anther and filament; and the sepal is a leaf-like structure that protects the flower bud before it blooms and can also play a role in supporting the petals. Understanding these parts and their functions is essential for anyone studying flowers and their role in pollination and reproduction.