What is the purpose of the Petals on a flower? Petals attract pollinators and insects and are usually the reason we buy and enjoy flowers. What is the purpose of the Sepals on a flower? Sepals help protect the developing bud. What is the purpose of the Stamen? It produces and releases the pollen. What is the purpose of the Pistil? It traps and holds the pollen. What is the purpose of the Stem? The stem transports the nutrients and water from the soil to the leaves. What is the purpose of the Roots? To provide nutirents from the soil to the flower 3rd grade students study parts of a flower