Why do sunflowers turn towards the Sun?

Sunflowers turn towards the Sun through a process called heliotropism. Young sunflower plants have cells in their stems that elongate on one side, causing the flower to tilt toward the light. This movement maximises their exposure to sunlight, aiding in photosynthesis and growth. Once the sunflower matures and blooms, it typically faces east, which helps attract pollinators by warming the flower faster in the morning.