Structure of a Monocotyledonous Seed Corn, wheat and rice, are examples of monocot seeds or monocotyledons. Embryos of a monocotyledonous seed possess only one large cotyledon called scutellum. The scutellum is generally shield-shaped and is located laterally towards a side of the embryo axis. As in dicotyledons, the embryo axis of monocotyledons possesses a shoot tip, plumule, enclosed in a sheath called coleoptile and a root tip, radicle, enclosed in coleorhiza. In a monocotyledonous seed ... Angiosperms can be classified as monocots, or dicots, depending on how many cotyledons are present in the seed. The seed is composed of an embryo and a protective outer cover called the seed coating. Learn what monocot seeds are, how they differ from dicot seeds, and what plants produce them. Find out the structure, examples, and characteristics of monocot seeds, such as endosperm, cotyledon, and scutellum. The shape of dicot seeds can be a useful identifier for differentiating between species. For example, peas and beans have distinct seed shapes that can be used to distinguish between these plants. Furthermore, dicots encompass a wide variety of plant types, from small herbs to large woody trees, which leads to significant variability in seed size.