Most fruits contain Fructose, which doesn't raise blood sugar, but some contain glucose, some sucrose and bananas contain starch too. Carrots,beets and onions store sucrose. parsnips, grains and potatoes store starch. Maize stores sugars, I can't remember which, but rapidly converts them to starch,(so it's probably glusose) Peas also contain sugars. In fact if it tastes sweet, it contains sugars. Unless it's a product of a chem lab. Since there's actually nothing essential in any of these foods, which can't be got from others, you can do perfectly well without them. Remember the 5-a-day is fruit AND vegetables. there are carbs in pretty much everything we eat except meat, but we can keep the amount down without getting deficiency symptoms. Lettuce isn't exciting, but it's low carb and contains traces of vitamin C. (actually I love crisp lettuce)