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The seed of a cereal plant such as corn or barley. The sectioned kernel shown below could be any one of the thousand or so found on a corn ear.

Each kernel consists of a relatively small diploid embryo, a triploid endosperm, and a tough diploid layer of maternal origin, the pericarp. The surface cells of the endosperm contain aleurone grains and oil. The remaining cells contain starch. The scutellum serves to digest and absorb the endosperm during the growth of the embryo and seedling. See anthocyanins, vacuoles.

Subjects: Genetics and Genomics.

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