There are different categories of vegetables, such as bud, bulb, flowers, leafy, root, stem, tuber, vegetable fruit and vegetable seed. Vegetables are a recommended part of a person's daily dietary intake, and the amount depends on a person's gender, age and level of physical activity. For example, a 25-year-old man who is physically active for 30 to 60 minutes per day should have at least 3.5 cups of vegetables.
Examples of different types of vegetables include artichokes and Brussels sprouts, which are bud vegetables, while broccoli and cauliflower are part of the flower vegetables. Onions and garlic are bulb vegetables, while potatoes and yams fall under the tuber category.