25 exam-style questions. Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.
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6.4 Pest control
Exam question
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Compare the use of pesticides and biological control.
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Total for this question: 4 marks
6.4 Pest control
Exam question
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State what is meant by biological control.
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Total for this question: 1 mark
6.4 Pest control
Exam question
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Which is an example of biological control?
(1)Total for this question: 1 mark
6.4 Pest control
Exam question
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Explain how pesticides can build up in food chains.
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Total for this question: 3 marks
6.4 Pest control
Exam question
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Explain why pests can become resistant to pesticides.
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Total for this question: 2 marks
6.4 Pest control
Exam question
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Explain why biological control agents must be tested before release.
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Total for this question: 2 marks
6.4 Pest control
Exam question
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Suggest why cane toads became a problem in Australia.
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Total for this question: 2 marks
6.4 Pest control
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Explain why pests reduce crop yield.
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Total for this question: 2 marks
6.4 Pest control
Exam question
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Illustrative field trial.
| Week | Pesticide plot | Ladybird plot |
|---|---|---|
| 0 | 500 | 500 |
| 1 | 50 | 400 |
| 2 | 80 | 250 |
| 3 | 200 | 120 |
| 4 | 350 | 100 |
Plot aphid numbers against time for both plots on the same axes. Join your points with straight lines using a ruler.
(6)Graph skills: SLAPUK and choosing a scale
Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 6 marks
6.4 Pest control
Exam question
Mark points shown after marking
| Week | Pesticide plot | Ladybird plot |
|---|---|---|
| 0 | 500 | 500 |
| 1 | 50 | 400 |
| 2 | 80 | 250 |
| 3 | 200 | 120 |
| 4 | 350 | 100 |
Compare the effects of pesticide and ladybirds on aphid numbers.
(3)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 3 marks
6.4 Pest control
Exam question
Mark points shown after marking
| Week | Pesticide plot | Ladybird plot |
|---|---|---|
| 0 | 500 | 500 |
| 1 | 50 | 400 |
| 2 | 80 | 250 |
| 3 | 200 | 120 |
| 4 | 350 | 100 |
Suggest why aphid numbers rose after week 1 on the pesticide plot.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
6.4 Pest control
Exam question
Mark points shown after marking
| Week | Pesticide plot | Ladybird plot |
|---|---|---|
| 0 | 500 | 500 |
| 1 | 50 | 400 |
| 2 | 80 | 250 |
| 3 | 200 | 120 |
| 4 | 350 | 100 |
Explain why ladybirds do not kill all the aphids.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
6.4 Pest control
Exam question
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Give two advantages of biological control.
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Total for this question: 2 marks
6.4 Pest control
Exam question
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Give two disadvantages of biological control.
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Total for this question: 2 marks
6.4 Pest control
Exam question
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Explain why a persistent pesticide is more harmful than one that breaks down quickly.
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Total for this question: 2 marks
