WAllelopathy
WAllomone
WAnimal repellent
WAposematism
WBatesian mimicry
WChemical defense
WChemical mimicry
WCompanion planting
WEscape and radiate coevolution
WFloral scent
WInsect repellent
WMüllerian mimicry
WPheromone trap
WPhytoalexin
WPlant defense against herbivory
WPlant disease resistance
WPreorbital gland
WPush–pull agricultural pest management
WTritrophic interactions in plant defense