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Biodiversity (GCSE Biology)

The following is a GCSE Biology test covering 'Biodiversity' from the broader topic Ecology. The test is geared towards the AQA exam board style syllabus.
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What effect does habitat restoration (e.g., replanting native vegetation) usually have on biodiversity over time?
What does the term "species richness" mean?
In a food web, which term describes organisms that make their own food by photosynthesis?
How do seed banks help conserve plant biodiversity?
What is the purpose of using many quadrat samples rather than just one quadrat when estimating plant abundance?
Which monitoring method is most suitable for assessing bird species richness in a woodland?
What is meant by "genetic diversity" within a species?
Which of the following is a biotic factor affecting a population?
What is a keystone species?
Which measurement would give the best indication of the total living material in a trophic level?
What is meant by the term "biodiversity"?