Definition: The term "angiosperms" refers to flowering plants, which include plants such as roses, lilies, and orchids. They are classified by their reproductive structures, which are typically divided into four main groups: monocots, decennates, trichocotyledons, and polycots. Each group has a different number of petals, each flower has anthers, and they reproduce sexually or asexually. This term is used to describe plants that grow in the air (or are cultivated) as part of the food web.