Heliotropism is the phenomenon where plants and flowers turn towards the sun as it moves across the sky. This behavior helps them maximize sunlight exposure, which is essential for photosynthesis—the process that allows them to convert light into energy. For example, the sunflower is well-known for its ability to follow the sun's path, a trait that helps it grow strong and healthy. This movement is not just limited to flowers; many plants exhibit heliotropic behavior. The ability to track sunlight is crucial for their survival, as it enhances their growth and reproduction. Heliotropism is a fascinating example of how nature adapts to optimize energy use and thrive in its environment.