Investigating Populations (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why do larger numbers of quadrats produce more reliable results in population studies?
Why do larger numbers of quadrats produce more reliable results in population studies?
They cover more area accurately
What is the first step in achieving truly random sampling in a study area?
What is the first step in achieving truly random sampling in a study area?
Position tape measures at right angles
Why must random sampling techniques be used when positioning quadrats?
Why must random sampling techniques be used when positioning quadrats?
To avoid bias in data collection
When are belt transects particularly useful in ecological studies?
When are belt transects particularly useful in ecological studies?
Studying gradual changes like succession
How is a belt transect carried out?
How is a belt transect carried out?
Quadrat placed at regular intervals
If a species appears in 15 out of 30 quadrats, what is its frequency?
If a species appears in 15 out of 30 quadrats, what is its frequency?
50%
What is the main advantage of using percentage cover to measure abundance?
What is the main advantage of using percentage cover to measure abundance?
Rapid data collection without counting
When is percentage cover less effective for measuring plant abundance?
When is percentage cover less effective for measuring plant abundance?
Where organisms occur in overlapping layers
Why is mark-release-recapture used instead of quadrat sampling for certain species?
Why is mark-release-recapture used instead of quadrat sampling for certain species?
For mobile animals that move and hide
If 20 marked, 25 recaptured with 5 marked, what is the estimated population? Use
If 20 marked, 25 recaptured with 5 marked, what is the estimated population? Use
100