Final answer:
Herbivory is a type of predation where herbivores feed on plants, which is a consumptive interaction affecting plant populations.
Step-by-step explanation:
Herbivory is actually a type of predation. This relationship can be described wherein one organism, the herbivore, consumes parts of plants (such as leaves, flowers, or seeds), thus acting as a predator to the plant-prey. While some aspects of herbivory may appear mutualistic, such as in the dispersal of seeds through consumption of fruits by herbivores, the fundamental interaction of herbivory itself is an act of predation. It shows an interspecific relationship that significantly affects plant populations. Plants have evolved various strategies to defend against herbivory, such as tough bark, spines, thorns, or toxic substances. However, the process itself is indeed a form of predation, as it involves one organism feeding on another.