A banana is a berry but a strawberry is not…confused? So was I. The berry is the most confusing fruit of them all.
In botany, a true berry is a fleshy or pulpy fruit in which the entire ovary wall ripens into a relatively soft pericarp, the seeds are embedded in the common flesh of the ovary, and typically there is more than one seed. Examples of botanical berries include the tomato, banana, grape, avocado, and persimmon. Example of true berries are currants, cranberries and gooseberries.
Generally speaking, the term berry refers to any small, edible fruit with multiple seeds. False berry or aggregate fruits, such as the strawberry, blackberry, raspberry, and the boysenberry, which develop from several ovaries, are berries in this sense, but not in the botanical sense. On the other hand, in common parlance, the tomato typically is not thought of as a berry.
So when some one asks you, is a tomato a fruit or vegetable, you can respond it is actually a berry. You will sound really intelligent but for our conversation we will refer to the American version a tomato is a vegetable and strawberry is a berry, which is totally inaccurate, its just easier.