What function do petals serve in a flower?

Petals serve a vital role in the reproductive process of flowers, particularly in attracting pollinators. While protecting the reproductive organs is indeed important, the primary function of petals is their ability to attract pollinators such as bees, butterflies, and birds. The bright colors and scents of petals are designed to lure these animals, facilitating the transfer of pollen from one flower to another, ultimately leading to fertilization and the production of seeds. This relationship between flowers and their pollinators is crucial for many plants’ reproductive success.

In terms of the other options, supporting the stem of the flower pertains more to the structural components of the plant, while the production of pollen is typically the responsibility of the anthers found in the flower's stamen. Thus, while petals can offer a protective role to some degree, their primary and most critical function lies in their ability to attract pollinators.