Concept:A monoecious plant bears both male and female flowers on the same individual plant.
Explanation:The question describes a flowering plant that carries both male flowers and female flowers on the same plant.
Such plants are called monoecious plants.
In contrast, dioecious plants have male and female flowers on separate plants.
Regular and irregular describe the symmetry of a flower, not the distribution of sexes.
Maize and castor are common examples of monoecious plants.
Thus, the correct term is monoecious.
Answer:C. Monoecious