A Level Biology Practice Exam

What method is typically used in systematic sampling to collect samples from a habitat?

1. Using random selection from the entire habitat

2. Sampling different areas of a habitat separately

3. Employing a survey across all areas simultaneously

4. Focusing on a single area of a habitat only

The correct answer is: Sampling different areas of a habitat separately

Systematic sampling involves selecting samples according to a predetermined pattern or method, ensuring that various areas of a habitat are represented in the collection process. By sampling different areas of a habitat separately, researchers can gain a comprehensive view of the biodiversity or characteristics across the entire habitat. This approach allows for the consistency and systematic nature of the sampling method, which can provide better overall insights into the habitat being studied. The other methods mentioned do not reflect the principles of systematic sampling. Random selection might lead to uneven representation of the habitat, while sampling across all areas simultaneously does not provide the structured approach characteristic of systematic sampling. Concentrating on a single area would overlook other important segments of the habitat, potentially biasing the findings. By systematically sampling different areas of the habitat, the method ensures a thorough evaluation and minimizes the risk of missing important variations within the ecological data.