Carrots can improve your vision if your body is deficient in vitamin A, but the popularity of carrots has more to do with a food shortage during WWII than beta-carotene.
Vegetables and fruits are any part of a plant consumed by humans.
Vegetables are plants, while fruits grow from the flowers of plants.
Botanically speaking, most of the “nuts” we eat are actually fruit seeds (most culinary nuts are not botanical nuts).
All fruits come from flowers, but not all flowers become fruits. Fruits are typically derived from the ovaries of a flower and contain seeds.
Tomatoes contain lycopene, which may help protect your skin from UV damage, this means eating tomatoes may work as a natural sunblock to prevent sunburn.
Botanically a banana is both a fruit and a berry which grows on large herbs (not trees).
Bananas don’t grow on banana trees, rather they grow on the world’s largest perennial herb which can grow up to 25 feet with leaves of up to 9 feet.
A tomato is botanically a berry and therefore a fruit, but politically and culinarily it’s treated as a vegetable. It’s accurate to call a tomato a berry, a fruit, and/or a vegetable, depending on context.