Ans.

Proteins :
Proteins are often called the body’s building blocks. They are used to build and repair tissues. They help you fight infection.
Carbohydrates :
Carbohydrates are the body’s main source of energy. The fruit, vegetables, dairy, and grain food groups all contain carbohydrates. Sweeteners like sugar, honey, and syrup and foods with added sugars like candy, soft drinks, and cookies also contain carbohydrates.  are the body’s main source of energy. The fruit, vegetables, dairy, and grain food groups all contain carbohydrates. Sweeteners like sugar, honey, and syrup and foods with added sugars like candy, soft drinks, and cookies also contain carbohydrates.
Fats :
Fats give you energy, and they help the body absorb certain vitamins. Essential fatty acids help the body function, but they aren’t made by your body—you have to consume them. Many foods naturally contain fats, including dairy products; meats, poultry, seafood, and eggs; and seeds, nuts, avocados, and coconuts. 
Vitamins :
Vitamins are required by our body in very small quantities. Vitamins help in keeping our eyes, bones, teeth and gums healthy. The food items rich in vitamins are called protective foods as they protect our body from diseases and keep us healthy.
Minerals :
Minerals are needed by our body in small amounts. Each one is essential for proper growth of body and to maintain good health.
Dietary fibre :
Dietary fibre is a vegetable element not digested by the body. It helps promote intestinal regularity. It also makes you feel full.
When eaten in large amounts, certain types of fibre help slow the absorption of sugars and control the level of cholesterol in the blood.