Controlling Population Size - WJEC

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  • Created by: Carrie
  • Created on: 14-03-14 22:24

1. Which of the following does not occur in the lag phase?

  • Enzyme synthesis
  • A species adapts to a habitat
  • Certain factors limit population gowth
  • There is a period of slow growth
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2. Which of the following is true about the exponential phase?

  • The population density stays the same
  • Bacterial cells divide at a constant rate
  • Nutrients have been used up
  • This rate of increase can be maintained indefinitely

3. Which of the following are ALL density dependant factors in mammals?

  • Accumulation of toxic waste, disease, flooding, overcrowding and depletion of food supply
  • Accumulation of toxic waste, disease, parasitism, overcrowding and depletion of food supply
  • Disease, a fire, parasitism, overcrowding and depletion of food supply
  • diesease, overcrowding, insufficient light and depletion of food supply

4. Which of the following is not a biotic factor?

  • competition
  • Disease
  • pH
  • Accumulation of toxic waste

5. Select the correct order of the following phases of population growth...

  • The lag phase, The exponential phase, death phase and the stationary phase
  • The lag phase, The stationary phase, the exponential phase and the death phase
  • The lag phase, The exponential phase, The stationary phase and the death phase.
  • The exponential phase, The stationary phase, The lag phase and the death phase.

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