Carotends are a type of pigment found in various plants and photosynthetic organisms, primarily responsible for the yellow, orange, and red colors in fruits and vegetables. They play a crucial role in photosynthesis by capturing light energy and also act as antioxidants, helping to protect cells from damage. Common carotenoids include beta-carotene, lutein, and lycopene, which are known for their health benefits, including supporting vision and reducing the risk of certain diseases.