Food feed
Purple
Early cultivated carrots included purple and yellow forms, while familiar orange carrots became prominent later in Europe. Saying that every original carrot was purple turns a varied domestication history into an oversimplification.
Berry
Bananas are botanical berries, while strawberries are aggregate accessory fruits. The distinction depends on how a flower becomes a fruit, not on sweetness, size or the name on a grocery label.
Legume
Peanuts are legumes, in the same plant family as peas and beans, rather than true botanical nuts. Their unusual feature is that the flowers develop above ground but the pods mature below it.