The condition in plants where reproduction occurs through open flowers that are pollinated by external agents like insects or wind.
From Greek 'chasma' (χάσμα, opening/gaping) and 'gamy' (from 'gamos' γάμος, marriage/reproduction). The term emerged in botanical terminology in the 19th century to classify different pollination and reproductive strategies in plants.
Chasmogamy is the 'normal' way flowers work—wide open, showing off bright colors and nectar—and it's so successful that over 95% of flowering plants use this strategy!
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