19.4 predation Flashcards

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1
Q

what is a predator?

A

organisms that feeds on another organism

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2
Q

what is prey?

A

organisms that get eaten by other organisms

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3
Q

what is predation?

A

the consumption of organisms

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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
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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
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