small, hard seeds of cereal crops like wheat and rice
Grain refers to the small, hard seeds of cereal crops such as wheat, rice, corn, barley, and oats, which are harvested for food consumption. These seeds are a staple in human diets worldwide and are also used in animal feed and various industrial applications. Grains are rich in carbohydrates, providing a significant source of energy, and they also contain essential nutrients like proteins, vitamins, and minerals.