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D Shield–shaped cotyledon
Scutellum can be defined as the single- shield shaped cotyledon of the monocots or cereals. Cereals are endospermic seed. In endospermic seed, the embryo consists of an upper shield shaped scutellum wich 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.