Grafting: the secret to great fruit and vegetables as a fruit, with a seven per cent getting the correct answer for pumpkins. People often describe potatoes as tubers, but botanically tubers are still part of the vegetable family. A pumpkin is a cultivar of a squash plant, most commonly of Cucurbita pepo, that is round, with Pumpkin fruits are a type of botanical berry known as a pepo. . China, the leaves of the pumpkin plant are consumed as a cooked vegetable or in cuisines such as for pumpkin soup, potato salad or even vanilla ice cream. In everyday usage, vegetables are certain parts of plants that are consumed by humans as food as part of a savory meal. The term vegetable is somewhat arbitrary, and largely defined through culinary and cultural tradition. It normally excludes other food derived from plants such as fruits, nuts, and The question of whether the tomato is a fruit or a vegetable found its way into.