Diversity

Last updated: 18/02/2022

AQA A-Level Biology Biodiversity within a community Diversity

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Question 1 of 27

1. Question
What is habitat diversity?
- Number of different habitats in an area
- Abundance of each species in a habitat
- Variation of alleles within a species
- Number of different species in a habitat
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Question 2 of 27

2. Question
What is genetic diversity?
- The total of different alleles of genes in a species
- Variation of alleles within a species
- Number of different species in a habitat
- Abundance of each species in a habitat
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Question 3 of 27

3. Question
What is species evenness?
- The relative abundance of each species in an environment
- Number of different species in a habitat
- Variation of alleles within a species
- The total number of different genetic characteristics of a species
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Question 4 of 27

4. Question
What is species richness?
- Measure of how many different species are present in an environment
- Measure of how evenly a species is spread out
- Measure of health within a species
- Measure of how a species helps economically
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Question 5 of 27

5. Question
What is a species?
- Group of organisms that freely interbreed to produce fertile offspring
- Group of fertile organisms
- Group of organisms that have the same niche
- Group of organisms with the same common ancestor
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Question 6 of 27

6. Question
What is biodiversity?
- Measure of variety in an environment
- Measure of variety in a species
- Measure of variety in an organism’s genome
- The total number of different genetic characteristics of a species
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Question 7 of 27

7. Question
What is used to identify plants?
- A dichotomous key
- Their leaves
- Diagrams
- The way in which the plant responds to light
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Question 8 of 27

8. Question
What does it mean if a site is homogeneous?
- Distribution and abundance of species are even across the site
- It is flat
- All species are the same
- It is identical to another site
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Question 9 of 27

9. Question
The presence of a person in natural habitat can have what effect?
- Disturbance
- Increased variety
- Change in species present
- Decreased variety
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Question 10 of 27

10. Question
What is climate change?
- Significant, long-lasting change in weather patterns
- Increase in temperature over time
- Fluctuations in weather patterns
- Decrease in temperature over time
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Question 11 of 27

11. Question
What is monoculture?
- Growing only 1 crop
- Growing lots of crops
- Growing a large variety of crops
- Growing crops slowly
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Question 12 of 27

12. Question
Which of these is not an effect of human population growth on other species?
- Increase in genetic diversity
- Destruction and fragmentation of habitats
- Pollution in atmosphere
- Alteration of ecosystems
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Question 13 of 27

13. Question
Which of these is not a reason why human population has grown so rapidly?
- Increased genetic diversity
- Improved healthcare
- Decreased infant mortality
- Improved diet/nutrition
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Question 14 of 27

14. Question
When does extinction occur?
- When the last living member of a species dies
- When a whole species is affected by disease
- When a new predator arises among prey
- When a species habitat is destroyed
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Question 15 of 27

15. Question
Which of these is not an obstruction of migration?
- Climate change
- Major human developments
- Large bodies of water
- Agricultural land
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Question 16 of 27

16. Question
Which of the following does modern agriculture not rely upon?
- Random mating
- Sunlight
- Pest control
- Monoculture
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Question 17 of 27

17. Question
What effect of palm oil agriculture causes a decrease in genetic diversity?
- Deforestation
- Harvest
- Economy
- Feeding
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Question 18 of 27

18. Question
Which of the following is not a reason why domesticated plants and animals are at risk from climate change?
- Domestication enables them to grow better under all conditions
- They are bred to flourish in specific conditions
- Their populations have decreased genetic diversity
- They can be sensitive to change in habitat conditions
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Question 19 of 27

19. Question
Which of the following is not a a reason why monoculture is used in agriculture?
- To increase genetic diversity
- Ease of harvest
- Improved cost-efficiency
- Consistent standard of produce
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Question 20 of 27

20. Question
What is a keystone species?
- A species that has a disproportionate effect upon its environment, relative to its abundance
- A species that has a proportionate effect upon its environment, relative to its abundance
- A species that has an even effect upon its environment, relative to its abundance
- A species that has an uneven effect upon its environment, relative to its abundance
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Question 21 of 27

21. Question
What is soil depletion?
- The loss of soil fertility caused by removal of minerals
- Reduction in mass of soil
- The loss of water retention in soil
- Reduction of sand in the soil
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Question 22 of 27

22. Question
Which of the following is not a way in which organisms in a habitat can be linked?
- Growth
- Competition for resources
- Participation in a food chain
- Mating
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Question 23 of 27

23. Question
Which of the following is an example of a keystone species?
- Fox
- Grass
- Rabbit
- Black bird
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Question 24 of 27

24. Question
Which of these is an ecological reason to maintain biodiversity?
- Maintain genetic resources
- Need for different building materials
- Detoxification of waste
- Purification of water
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Question 25 of 27

25. Question
Which of these is not a reason to maintain biodiversity?
- To increase the human population
- Aesthetics
- For genetic resources
- Regulation of the atmosphere
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Question 26 of 27

26. Question
Which of these keystone species prevents flooding?
- Beaver
- Fox
- Lion
- Deer
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Question 27 of 27

27. Question
What can soil depletion result in?
- Dust storms
- Disease
- Tornados
- Hurricanes
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