Which of the following must be true for a grain to be called whole? a. the grain must consist of bran and the endosperm. b. the grain has the full value of dietary fiber. c. the grain has been refined. d. the grain contains all three parts of the kernel.

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Which of the following must be true for a grain to be called whole? a. the grain must consist of bran and the endosperm. b. the grain has the full value of dietary fiber. c. the grain has been refined. d. the grain contains all three parts of the kernel.

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The correct answer is D. Grain contains three parts of the kernel.

Grain refers to a grain that contains all three of the original parts of the kernel: the bran, the endosperm and the microbe (see attached image). Popcorn, unlike refined grain, is not processed and all three parts of the kernel are intact. Examples of whole grain food sources include barley, brown rice, oatmeal, whole wheat pasta, etc.