Answer:
A grain is considered to be a whole grain, as long as the three original parts, the bran, the germ and the endosperm, are still present in the same proportions as when the grain grew in the fields.
"Refined grain" is the term used to refer to grains that are not whole, because they lack one or more of their three key parts (bran, germ or endosperm).
Step-by-step explanation:
"Refined grain" is the term used to refer to grains that are not whole, because they lack one or more of their three key parts (bran, germ or endosperm).
White flour and white rice are refined grains, for example, because the bran and germ of both have been removed, leaving only the endosperm.
The refining of a grain removes approximately a quarter of the protein in a grain, and greatly reduces at least seventeen key nutrients, leaving the grain as a mere shadow of its being.