The condition in plants where male and female reproductive organs are on completely separate individual plants rather than on the same plant.
From Greek 'di-' (two) and 'oikos' (house), meaning 'two houses'—each plant is essentially a separate 'house' for either male or female reproduction.
Dioecious plants like ginkgo trees created an evolutionary problem for urban planners: female ginkgos produce notoriously smelly fruits, so cities worldwide plant only males, which accidentally created all-male populations that can't reproduce—a cautionary tale of ecosystem management.
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