Both fruits and vegetables are very high in nutrition as they contain many vitamins and are low in fat and calories. A cup of fruit may contain more calories than a cup of vegetables because fruits have higher sugar content. However, starchy vegetables like beet and potato are higher in calorie as well as sugar.
Although vegetables and fruits are extensively used in preparations that involve cooking or baking, they provide most nutrition when they are eaten raw.
Because of the combination of high nutrition and low calorie, most weight loss and diet plans recommend high portions of fruits and veggies over processed food.
In the video below, a dietitian talks about the importance of fruits and vegetables to the diet and whether canned or frozen fruits and vegetables are just as nutritious as fresh.