To make whole wheat flour, the endosperm is combined with the bran and the germ. Bran is made up of the outer layers of the wheat kernel. Bran is used in whole wheat flour. It is also used in breakfast cereals. The germ is the part that will sprout and grow into a new wheat plant if the kernel is planted.
Wheat germ is sold in grocery stores and food markets.
Whole wheat flour also contains wheat germ.