葵花, or sunflower, is a bright yellow flower known for its large, round shape and tall stalk. It belongs to the Asteraceae family and is native to the Americas. Sunflowers are famous for their ability to turn towards the sun, a phenomenon known as heliotropism, which helps them maximize sunlight for photosynthesis. The seeds of the sunflower are edible and are often used for snacks, cooking oil, and bird feed. Additionally, sunflower oil is a popular cooking oil due to its light flavor and high smoke point. Sunflowers also play a role in agriculture, as they can improve soil health and attract beneficial insects.