Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Cross-pollination occurs when pollen from the anther of one flower is transferred to the stigma of another flower, often of the same species. This process promotes genetic diversity within a plant population.
5 Must Know Facts For Your Next Test
Cross-pollination can be facilitated by wind, water, insects, or other animals.
It results in greater genetic variability compared to self-pollination.
Many flowering plants have evolved mechanisms to encourage cross-pollination and discourage self-pollination.
The success of cross-pollination often depends on the compatibility between the pollen and the receiving flower's stigma.
Some plants are specifically adapted for cross-pollination through specialized structures or timing of reproductive phases.
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Related terms
Self-Pollination: The transfer of pollen from the anther to the stigma of the same flower or another flower on the same plant.
Pollinator: An organism that helps carry pollen from one flower to another, aiding in cross-pollination.
Stigma: The part of a flower's pistil where pollen germinates during pollination.