Final answer:
Yams and sweet potatoes are not produced by the same plant. They belong to different plant families and have different characteristics.
Step-by-step explanation:
Yams and sweet potatoes are not produced by the same plant. Yams are the edible tubers of the Dioscorea genus, while sweet potatoes are the edible tubers of the Ipomoea batatas plant. Although they are both starchy root vegetables, they belong to different plant families and have different characteristics.