Which part of the flower is responsible for attracting pollinators? 

Typically, flowers have four whorls: calyx (sepals), corolla (petals), androecium (stamens), and gynoecium (carpels). The corolla is the second whorl of the flower and is composed of petals that are often brightly colored and patterned to attract pollinators such as insects and birds.

Nectar, a sweet liquid produced by the flower, provides a food reward for pollinators. Some flowers also produce fragrances to further attract pollinators, while others have specialized structures, such as landing platforms or nectar guides, to direct pollinators to the reproductive parts of the flower. The goal of these strategies is to ensure that the pollen is transferred from the stamen to the stigma, leading to successful pollination and reproduction of the plant.