The correct option is D Maize
The seed alone does not form the edible part in maize. The pericarp of the maize fruit is fused with the seed coat as caryopsis, and the entire kernel is often referred to as the seed. The cob is close to a multiple fruit in structure, except the kernels never fuse into a single mass. The grains are about the size of peas, and adhere in regular rows around a white, pithy substance, which forms the ear. When ground into flour, maize yields more flour with much less bran than wheat does. A genetic variant that accumulates more sugar and less starch in the ear is consumed as a vegetable and is called sweet corn. Young ears can be consumed raw, with the cob and silk, but as the plant matures the cob becomes tougher and the silk dries to inedibility.