There are five main food groups: fruits and vegetables, bread and cereals, milk and dairy, meat and fish, and sugary foods. The document provides examples of foods that fall into each group, such as bananas, pineapples, and carrots in the fruits and vegetables group; bread and cereals in the bread and cereals group; yogurt, milk and cheese in the milk and dairy group; tuna fish and chicken in the meat and fish group; and cake, biscuits and sweets in the sugary foods group.