SQA National 5 Biology Practice Exam

The term that describes the act of obtaining food by hunting and killing prey organisms is predation. This process involves a predator, which is the organism that hunts, capturing and consuming its prey. Predation is a crucial ecological interaction that helps regulate population sizes within ecosystems and contributes to the flow of energy through the food web.

When a predator hunts its prey, it demonstrates key behaviors and adaptations that enable its success in finding and capturing food. This includes strategies like stealth, speed, and specialized body structures that enhance hunting efficiency. The relationships within predation can also affect the evolution of both the predator and prey species, influencing their physical and behavioral characteristics over time.

To clarify the other terms: herbivory refers to the consumption of plants by animals, parasitism is a relationship where one organism benefits at the expense of another, often without killing it, and competition involves organisms striving for the same resources in a given environment, which can include food, space, or mates. Each of these terms represents different ecological interactions, but only predation specifically pertains to the act of hunting and killing for food.