19.4 predation Flashcards
1
Q
what is a predator?
A
organisms that feeds on another organism
2
Q
what is prey?
A
organisms that get eaten by other organisms
3
Q
what is predation?
A
the consumption of organisms
4
Q
explain why a predator population often exterminates its prey population in a laboratory but rarely does so in natural habitats
A
- range and variety of laboratory habitats is much smaller than in natural ones
- less hiding spaces and places to escape the predator and survive
5
Q
explain how a fall in the population of a predator can lead to a rise in its prey population
A
- fewer predators means fewer prey are eaten
- death rate of prey is reduced
- population size increases