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Sampling with quadrats

10th grade (Year 11 in England) · 16 questions · Common Core: NGSS.HS-LS2-1, NGSS.HS-LS2-2 · England: KS4 Combined Science: Ecosystems

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Question 1
The mean number of buttercups in a 0.25 m² quadrat is 6. The field is 100 m². Estimate the number of buttercups in the field.
Answer
Question 2
Five 1 m² quadrats contained these numbers of daisies: 4, 6, 2, 6, 8. What is the mean number of daisies per quadrat?
Answer
3
Question 3
Which is a biotic factor?
- A. soil pH
- B. carbon dioxide level
- C. temperature
- D. a new predator arriving
Question 4
The mean number of buttercups in a 0.25 m² quadrat is 9. The field is 500 m². Estimate the number of buttercups in the field.
Answer
Question 5
Five 1 m² quadrats contained these numbers of daisies: 6, 8, 12, 9, 2. What is the mean number of daisies per quadrat?
Answer
6
Question 6
Why should quadrats be placed at random?
- A. Because it is quicker
- B. To find the most plants
- C. So the results are always the same
- D. To avoid bias, so the sample represents the whole area
Question 7
The mean number of buttercups in a 0.25 m² quadrat is 4. The field is 1000 m². Estimate the number of buttercups in the field.
Answer
Question 8
Five 1 m² quadrats contained these numbers of daisies: 7, 4, 6, 9, 10. What is the mean number of daisies per quadrat?
Answer
9
Question 9
Which is an abiotic factor?
- A. competition from other plants
- B. a new disease
- C. number of predators
- D. light intensity
Question 10
The mean number of buttercups in a 1 m² quadrat is 5. The field is 200 m². Estimate the number of buttercups in the field.
Answer
Question 11
Five 1 m² quadrats contained these numbers of daisies: 1, 6, 2, 12, 11. What is the mean number of daisies per quadrat?
Answer
12
Question 12
Which is an abiotic factor?
- A. competition from other plants
- B. a new disease
- C. light intensity
- D. number of predators
Question 13
The mean number of buttercups in a 1 m² quadrat is 12. The field is 50 m². Estimate the number of buttercups in the field.
Answer
Question 14
Five 1 m² quadrats contained these numbers of daisies: 8, 1, 0, 0, 12. What is the mean number of daisies per quadrat?
Answer
15
Question 15
Which is an abiotic factor?
- A. light intensity
- B. number of predators
- C. competition from other plants
- D. a new disease
Question 16
The mean number of buttercups in a 0.25 m² quadrat is 8. The field is 250 m². Estimate the number of buttercups in the field.
Answer

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