Definition: A plant species is said to be dioecious when its male and female reproductive organs are carried on separate individual plants of the same species. When a plant species is dioecious, at least one male plant must be present in a group for the fruit-bearing female plants to be pollinated. By contrast, "monoecious" plants are plants having unisexual reproductive organs or flowers, with the organs or flowers of both sexes borne on a single plant.
Alternate Spellings: diecious
