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6.3 Fertiliser and crop yield
Exam question
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Explain how fertilisers increase crop yield.
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Total for this question: 3 marks
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
Which ion is needed to make proteins?
(1)Total for this question: 1 mark
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
Explain why crops grown in the same field each year need fertiliser.
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Total for this question: 2 marks
6.3 Fertiliser and crop yield
Exam question
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Compare the use of manure and artificial fertiliser.
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Total for this question: 3 marks
6.3 Fertiliser and crop yield
Exam question
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Explain why adding too much fertiliser can reduce profit.
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Total for this question: 2 marks
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
Illustrative field trial.
| Fertiliser / kg per hectare | Yield / tonnes per hectare |
|---|---|
| 0 | 3.0 |
| 50 | 5.2 |
| 100 | 6.8 |
| 150 | 7.6 |
| 200 | 7.8 |
| 250 | 7.7 |
Plot wheat yield against fertiliser applied. Join your points with straight lines using a ruler.
(5)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: 5 marks
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
| Fertiliser / kg per hectare | Yield / tonnes per hectare |
|---|---|
| 0 | 3.0 |
| 50 | 5.2 |
| 100 | 6.8 |
| 150 | 7.6 |
| 200 | 7.8 |
| 250 | 7.7 |
Describe the effect of fertiliser on yield.
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Total for this question: 3 marks
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
| Fertiliser / kg per hectare | Yield / tonnes per hectare |
|---|---|
| 0 | 3.0 |
| 50 | 5.2 |
| 100 | 6.8 |
| 150 | 7.6 |
| 200 | 7.8 |
| 250 | 7.7 |
Calculate the increase in yield per kg of fertiliser between 0 and 50 kg per hectare.
(2)Total for this question: 2 marks
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
| Fertiliser / kg per hectare | Yield / tonnes per hectare |
|---|---|
| 0 | 3.0 |
| 50 | 5.2 |
| 100 | 6.8 |
| 150 | 7.6 |
| 200 | 7.8 |
| 250 | 7.7 |
Suggest the amount of fertiliser a farmer should use and explain your answer.
(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
6.3 Fertiliser and crop yield
Exam question
Mark points shown after marking
| Fertiliser / kg per hectare | Yield / tonnes per hectare |
|---|---|
| 0 | 3.0 |
| 50 | 5.2 |
| 100 | 6.8 |
| 150 | 7.6 |
| 200 | 7.8 |
| 250 | 7.7 |
Explain why yield falls slightly at 250 kg per hectare.
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Total for this question: 2 marks
6.3 Fertiliser and crop yield
Exam question
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State the function of nitrate, phosphate and potassium ions in plants.
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Total for this question: 3 marks
6.3 Fertiliser and crop yield
Exam question
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Explain why plants lacking magnesium have yellow leaves.
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Total for this question: 2 marks
6.3 Fertiliser and crop yield
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Explain why fertiliser should not be applied just before heavy rain.
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Total for this question: 2 marks
Plan it with CORMMSS: Design an investigation (Logic Lab).
6.3 Fertiliser and crop yield
Exam question
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Link: practise planning on /subjects/igcse-biology/logic-lab/design-an-investigation.
Design an investigation to find out how the concentration of nitrate fertiliser affects the growth of duckweed.
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Total for this question: 6 marks
6.3 Fertiliser and crop yield
Exam question
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Explain why duckweed is useful for studying the effect of fertilisers.
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Total for this question: 2 marks
