In cereal grain, single cotyledon is represented by
In grain seed, which is moncot and endospermic seed. the embryo consists of an upper shield shaped scutellum which is actually a reduced cotyledon. The scutellum is closely pressed against the endosperm and helps in the translocation of nutrients from endosperm to the growing embryo at the time of germination and seedling growth. So, the correct answer is 'Scutellum'.