14 – To Investigate Quantitatively the Impact of Variation in Abiotic Factors on the Distribution and Abundance of a Species (LC 2027) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are abiotic factors?
What are abiotic factors?
Non-living environmental conditions
How does soil pH affect plant communities?
How does soil pH affect plant communities?
Influences nutrient availability
Which organisms are suitable for quadrat sampling?
Which organisms are suitable for quadrat sampling?
Plants and slow-moving animals
Why is random quadrat placement important?
Why is random quadrat placement important?
Ensures unbiased results
At what intervals are organisms recorded along line transects?
At what intervals are organisms recorded along line transects?
Every 1 metre
What is a belt transect?
What is a belt transect?
Line transect with quadrats at intervals
Which method estimates populations of mobile animals?
Which method estimates populations of mobile animals?
Capture-recapture
If 20 animals marked first, 30 caught second with 5 marked, what is the population estimate?
If 20 animals marked first, 30 caught second with 5 marked, what is the population estimate?
120
What must happen for capture-recapture to be accurate?
What must happen for capture-recapture to be accurate?
Marked animals must mix with population
If dandelions appear in 15 of 25 quadrats, what is the frequency?
If dandelions appear in 15 of 25 quadrats, what is the frequency?
60%
Which method provides more accurate percentage cover estimates?
Which method provides more accurate percentage cover estimates?
Grid quadrats
What should you remember when analysing abiotic factor data?
What should you remember when analysing abiotic factor data?
Correlation doesn't prove causation