Angiosperms, also known as flowering plants, are a diverse group of plants that produce flowers and seeds enclosed within a fruit. They are the most abundant group of plants on Earth, playing a crucial role in ecosystems as they provide food, shelter, and oxygen. Examples of angiosperms include roses, oak trees, and grasses. These plants have adapted to a wide range of environments, from tropical rainforests to arid deserts. Angiosperms are vital for agriculture, as they include many crops that humans rely on for food, such as wheat, rice, and corn.