monoecious
Hollies are dioecious, which means that male and female flowers are on separate plants.
The species is dioecious, so flowers on a female plant will only produce fruit when fertilized with pollen from a male plant.
Stinging nettle is a dioecious herbaceous perennial, tall in the summer and dying down to the ground in winter.
The parasites are dioecious, offering the possibility of producing hybrids of different strains.

SMART Vocabulary: related words and phrases

Animal reproduction
androgen
anti-oestrogen
asexuality
asexually
barrenness
calve
fertile
impregnate
oestrogen
ovulate
panmictic
panmixia
procreate
procreation
procreative
propagation
rut
semen
spawn
sterile

Examples of dioecious

dioecious
One of the most intriguing features about schistosomes is that they are dioecious not hermaphrodite, like most other trematodes.
In other words, if hermaphrodites can invade a dioecious population under selection for reproductive assurance (low a), the population will evolve to androdioecy or hermaphroditism.
The criteria for the invasion of hermaphrodites into a dioecious population when l>0 can be found numerically.
In contrast, few dioecious fig pollinators were caught and the turnover of species between years was substantial.
To our knowledge, this is the lowest visitation rate recorded in a dioecious tree species so far.
At this scale, these results suggest that the dioecious breeding system is rare in successively smaller patches of tropical dry forest.
The inbreeding effective population number in dioecious populations.
Most species are monoecious and a few are dioecious.
In some dioecious species, female trees produce larger flowers than male trees.
It seems likely that many dioecious-fig pollinators are dispersing shorter distances.
Conversely, few dioecious-fig pollinators were caught and species overlap between years was low.
Vicarious selection explains some paradoxes in dioecious fig-pollinator systems.
Most are canopy or emergent trees that rely on insect or bat pollinators and vertebrate seed dispersers; none is known to be dioecious or deciduous.
In particular, the richness and abundance of dioecious and mammal-dispersed trees and shrubs were examined to identify potential associations with precipitation, anthropogenic disturbance, and area.
For breeding systems, the number and percentages of dioecious species encountered at each site were significantly correlated with both reserve size and forest cover.
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