Corn is a large grain plant domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain the grain, which are seeds called kernels. Corn kernels are often used in cooking as a starch.

The first corn plants only grew small, one-inch long corn, and only one per plant, but artificial selection by the indigenous people of the Americas made it to grow several cobs per plant, and usually several inches long each time.