The sweet potato or sweet potato is a dicotyledonous plant that belongs to the bindweed or morning glory family, Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are a root vegetable. The young leaves and shoots are sometimes eaten as greens. A single sweet potato can contain 769 percent of the amount of Vitamin A you need to consume daily. Vitamin A is great for your vision, bones and skin, and helps strengthen your immune system.