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5.5 Abiotic and biotic factors
Exam question
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State two abiotic factors and two biotic factors that affect populations.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Which is a biotic factor?
(1)Total for this question: 1 mark
5.5 Abiotic and biotic factors
Exam question
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Explain how temperature can affect the distribution of a plant.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Explain how competition affects plant populations.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
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Explain how the population of a predator affects the population of its prey.
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Total for this question: 3 marks
5.5 Abiotic and biotic factors
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Suggest why few plants grow on the floor of a dense forest.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Identify which of these are abiotic: rainfall, parasites, soil minerals, grazing.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Explain how disease can reduce a population.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Explain why soil pH affects which plants grow in an area.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
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Describe how to measure soil pH.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Illustrative predator–prey data.
| Year | Hare | Lynx |
|---|---|---|
| 1 | 30 | 4 |
| 2 | 60 | 6 |
| 3 | 80 | 12 |
| 4 | 40 | 16 |
| 5 | 20 | 8 |
| 6 | 35 | 4 |
Plot the numbers of hare and lynx against year on the same axes. Join your points with straight lines using a ruler.
(6)Graph skills: SLAPUK and choosing a scale
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Total for this question: 6 marks
5.5 Abiotic and biotic factors
Exam question
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| Year | Hare | Lynx |
|---|---|---|
| 1 | 30 | 4 |
| 2 | 60 | 6 |
| 3 | 80 | 12 |
| 4 | 40 | 16 |
| 5 | 20 | 8 |
| 6 | 35 | 4 |
Explain why the lynx population peaks after the hare population.
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Total for this question: 3 marks
5.5 Abiotic and biotic factors
Exam question
Mark points shown after marking
| Year | Hare | Lynx |
|---|---|---|
| 1 | 30 | 4 |
| 2 | 60 | 6 |
| 3 | 80 | 12 |
| 4 | 40 | 16 |
| 5 | 20 | 8 |
| 6 | 35 | 4 |
Suggest one factor other than lynx that could reduce the hare population.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Explain why water availability is a key abiotic factor in deserts.
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Total for this question: 2 marks
5.5 Abiotic and biotic factors
Exam question
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Give one abiotic factor in a pond and explain its effect.
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Total for this question: 2 marks
