Students investigating grass species diversity in a St. Vincent school field used quadrats of different sizes: 0.25 m², 0.5 m² and 1.0 m². Which statement about quadrat size is correct?

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Question

Students investigating grass species diversity in a St. Vincent school field used quadrats of different sizes: 0.25 m², 0.5 m² and 1.0 m². Which statement about quadrat size is correct?

Accepted Answer

Quadrat size should be appropriate for the size of organisms being studied — Award 1 mark for B. Small quadrats suit small organisms like grasses; larger quadrats suit larger, less dense organisms. A is incorrect — larger is not always better; it depends on organism size and density. C is incorrect — larger quadrats are needed for trees. D is incorrect — quadrat size significantly affects results and efficiency.

Answer

Quadrat size should be appropriate for the size of organisms being studied

Answer

Smaller quadrats are better for studying tree populations

Answer

Quadrat size does not affect sampling results

Answer

Larger quadrats always give more accurate results

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