Populations and ecosystems

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1. 'Only those individuals who are able to escape predators/withstand disease/withstand an adverse climate will survive to reproduce'. What is this termed?

  • Natural selection
  • Selection pressure
  • Darwin's Law
  • Survival of the fittest
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Other questions in this quiz

2. Why can cold temperatures affect mammal and bird populations?

  • More energy is used trying to keep warm so their is less energy available for growth and reproduction
  • Enzymes act more slowly as they are not at their optimum temperature
  • The enzymes are denatured so substrates cannot bind to their active sites
  • Shivering causes a decrease in population sizes due to kinetic theory

3. What could increase human birth rate?

  • Social/cultural practices
  • Pets
  • More contraception
  • A higher proportion of people studying at university

4. What is interspecific competition?

  • Competition between members of the same community
  • Competition between members of different species
  • Competition between members of the same species
  • Competition between members of different habitats

5. What are all the interacting biotic and abiotic features in a specific area known as?

  • Habitat
  • Biosphere
  • Ecosystem
  • Community


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