Monocotyledons, commonly known as monocots, are a group of flowering plants characterized by having a single seed leaf, or cotyledon, in their seeds. This group includes familiar plants such as grasses, lilies, and orchids. Monocots typically have parallel leaf veins, fibrous root systems, and flower parts that are usually in multiples of three. Monocots are one of the two major groups of flowering plants, the other being Dicotyledons. They play essential roles in ecosystems and agriculture, providing food, habitat, and resources. Examples of economically important monocots include rice, wheat, and corn, which are staple crops worldwide.