Bananas and plantains belong to Musa, which is a genus that includes about 70 species. Bananas are packed with nutrients. According to the USDA, 100 g serving of banana provides 74.91 g of water, 89 kilocalories of energy, 1.09 g of protein, 0.33 g of fat, 22.84 g of carbohydrate, 2.6 g of total dietary fiber, and 12.23 g of sugar.