By weight, bananas contain 75 percent water; they also consist of pulp and nutrients, such as vitamins, minerals, carbohydrate and fiber. The pulp consists of the sugars sucrose and fructose, which provide quick energy to the body. In 100 grams of banana, there are 90 calories and 7 percent of the daily recommended allowance of dietary fiber.
Bananas are good sources of many vitamins and minerals, such as vitamins B6 and C, and the minerals copper, potassium and magnesium. In 100 grams of this fruit, there are about 358 milligrams of potassium.
Due to their high content of potassium, bananas can have cardiovascular benefits. Similarly, they contain fiber and sugars that support a healthy digestive tract.
Although many believe that bananas come from a tree, they are herbaceous plants that grow in tropical climates. The scientific name for banana is Musa acuminata colla.