Question detail

GX49: In marram dune quadrat, which design best tests Evaluate conservation methods and ecosystem management.?

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MCQ

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practice

Style

Topic

Genetics and ecosystems official content

Question

A. GX49: Use the marram dune quadrat. Measure percentage cover grid. Change sand moisture probe; record the dependent variable from the data table; hold shoreline distance marker constant. Use random/systematic sampling, representative sample size and bias check. Compare observed and expected values; use critical value, significance and null hypothesis. Correlation means association; correlation does not prove causation. Gene: DNA locus. Allele: variant form. Hardy-Weinberg: allele-frequency model. Natural selection: differential reproductive success.
B. GX49: Use casual observations of marram dune quadrat; omit expected values and ignore sample size.
C. GX49: Change sand moisture probe and shoreline distance marker together, then claim correlation proves causation.
D. GX49: Discuss Evaluate conservation methods and ecosystem management. without a null hypothesis, controlled variable or bias check.

Answer

The correct answer is: GX49: Use the marram dune quadrat. Measure percentage cover grid. Change sand moisture probe; record the dependent variable from the data table; hold shoreline distance marker constant. Use random/systematic sampling, representative sample size and bias check. Compare observed and expected values; use critical value, significance and null hypothesis. Correlation means association; correlation does not prove causation. Gene: DNA locus. Allele: variant form. Hardy-Weinberg: allele-frequency model. Natural selection: differential reproductive success.

Explanation

A precise explanation should use the context, quote or interpret any evidence, and return to Evaluate conservation methods and ecosystem management. rather than giving a generic biology statement. GX49: The correct option is supported by percentage cover grid, sand moisture probe, controlled shoreline distance marker, representative sampling, observed and expected values, and a cautious correlation judgement. Distractors usually fail because they reverse the mechanism, use the wrong scale of organisation, or describe a related topic without answering the exact objective.

Common mistake

Populations in ecosystems common mistake 1

Giving a vague answer instead of directly addressing: Evaluate conservation methods and ecosystem management..

Answer by clearly explaining how to evaluate conservation methods and ecosystem management..

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