Cereals

Cereals, grains or cereal grains, are grasses (members of the monocot families Poaceae or Gramineae)fruit called a caryopsis) - the endocarp, germ and bran. Cereal grains are grown in greater quantities and provide 
 more food energy worldwide than any other type of crop; they are therefore staple crops. In their natural form (as in whole grain), they are a rich source of vitamins, minerals, carbohydrates, fats, oils, and protein. However, when refined by the removal of the bran and germ, the remaining endocarp is mostly carbohydrate and lacks the majority of the other nutrients. In some developing nations, grain in the form of rice, wheat, or maize (in American terminology, corn) constitutes a majority of daily sustenance. In developed nations, cereal consumption is more moderate and varied but still substantial.