Predation Flashcards
What’s a predator
Is an organism that feeds on another organism, known as their prey
What is predation
It occurs when one organism is consumed by another.
Describe the relationship between predators and their prey and it’s effect on population size
Predators eat their prey, thereby reducing the population of the prey
With fewer prey available the predators are in greater competition with each other for the prey that are left
The predator population is reduced as some individuals are unable to obtain enough prey for their survival or to reproduce
With fewer predators left, fewer prey at eaten and so not survive and are able to reproduce
They prey population therefore increases
With more prey now available as food, the predator population in turn increases
Explain why a predator population often exterminates its prey population in a laboratory but rarely does so in natural habitats
The range and variety of laboratory habitat is much smaller than in natural ones. This means that in nature there is a greater range of hiding places and so the prey has more space and places to escape the predator and survive