Edexcel IGCSE Biology · Spec 4.2, 4.4B
Comparing Habitats and Biodiversity with Quadrats
Covers compare populations in two areas using quadrats, Measure abundance, frequency and percentage cover and Use quadrat data to compare biodiversity.
Biology revision video
Comparing Habitats and Biodiversity with Quadrats
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Spec 4.2, 4.4B
What you need to know
- Compare populations in two areas using quadrats
- Measure abundance, frequency and percentage cover
- Use quadrat data to compare biodiversity
Active recall
Quick check
Answer each question before opening the answer.
Why are random coordinates used?
To reduce selection bias
How is frequency calculated?
Quadrats containing the species divided by total quadrats, multiplied by 100
What is species richness?
The number of different species recorded in an area
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