No, maize is a C4 plant.
Maize plant is a monocot belonging to grass family. It is C4 plant metabolically.
Maize is another name for corn.
the leaf of a maize plant has parallel venation
Maize is a natural plant. No-one invented it.
Yes maize which is also know as corn is edible
maize is neither a herb, nor a shrub. it is a crop plant