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6.1 Monitoring and maintaining the environment

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Question 26
F

Two students estimate the number of clover plants on the same field.

Student A uses 5 quadrats. Student B uses 30 quadrats. Both students place their quadrats at random.

Why is the estimate of Student B likely to be closer to the true number?

[1]
A

A larger random sample is more likely to represent the whole field.

B

Using more quadrats means that every clover plant in the field is counted.

C

A larger sample means the quadrats no longer need to be placed at random.

D

Using more quadrats makes the count in each separate quadrat more precise.

Markscheme

6.1 Monitoring and maintaining the environment Questions

  1. GCSE
  2. /Biology
  3. /6.1 Monitoring and maintaining the environment

109 exam-style questions on OCR GCSE Biology 6.1 Monitoring and maintaining the environment, covering 6.1.1 Field investigation of distribution and abundance, 6.1.2 Human interactions and biodiversity, 6.1.3 Maintaining biodiversity, and 6.1.4 Environmental change and distribution of organisms. Each one has a worked solution and a mark scheme showing where the marks go.

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