ScholarLab KS4 Biology Practice Exam questions 3.8B 3(h) TRANSPORT · EXAM QUESTIONS 3.8B Environmental factors and transpiration 12 exam-style questions · Biology only (B): not in Science (Double Award). 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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All · 12 Data and graphs · 1 Calculation · 2 Short answer · 6 Design an investigation · 2 Multiple choice · 1 01 Draw Data and graphs 5 marks
3.8B Environmental factors and transpiration
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Illustrative results from a class investigation with a bubble potometer.
Illustrative data, not from a real investigation. Plot a graph of the results in the table. Join your points with straight lines using a ruler.
(5) Graph skills: SLAPUK and choosing a scale
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Total for this question: 5 marks
Lesson: 3.8B Environmental factors and transpiration
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02 Calculate Calculation 2 marks
3.8B Environmental factors and transpiration
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Illustrative data, not from a real investigation. Calculate the rate of water uptake when the fan was 20 cm from the shoot, in mm per minute.
(2) Answer mm per min
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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03 Describe Short answer 2 marks
3.8B Environmental factors and transpiration
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Illustrative data, not from a real investigation. Describe the effect of the distance of the fan on the rate of water uptake.
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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04 Calculate Calculation 2 marks
3.8B Environmental factors and transpiration
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Illustrative data, not from a real investigation. The capillary tube has a cross-sectional area of 0.8 mm². Calculate the volume of water taken up in 5 minutes when the fan was 40 cm away.
(2) Answer mm³
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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05 Explain Short answer 2 marks
3.8B Environmental factors and transpiration
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Explain why the student waited five minutes after moving the fan before taking a reading.
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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06 Explain Short answer 2 marks
3.8B Environmental factors and transpiration
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Explain why the student used the same shoot for every reading.
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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07 Suggest Short answer 2 marks
3.8B Environmental factors and transpiration
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Suggest how the student could return the bubble to the start of the scale.
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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08 Evaluate Short answer 3 marks
3.8B Environmental factors and transpiration
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Illustrative data, not from a real investigation. A student concluded that wind speed is the most important factor affecting transpiration. Evaluate this conclusion using the results.
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Total for this question: 3 marks
Lesson: 3.8B Environmental factors and transpiration
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Plan it with CORMMSS: Design an investigation (Logic Lab) .
09 Design Design an investigation 6 marks
3.8B Environmental factors and transpiration
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Link: practise planning on /subjects/igcse-biology/logic-lab/design-an-investigation.
Design an investigation to find out how temperature affects the rate of transpiration of a leafy shoot.
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Total for this question: 6 marks
Lesson: 3.8B Environmental factors and transpiration
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Plan it with CORMMSS: Design an investigation (Logic Lab) .
10 Design Design an investigation 6 marks
3.8B Environmental factors and transpiration
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Link: practise planning on /subjects/igcse-biology/logic-lab/design-an-investigation.
Design an investigation to find out how light intensity affects the rate of water uptake by a shoot.
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Total for this question: 6 marks
Lesson: 3.8B Environmental factors and transpiration
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11 Explain Short answer 2 marks
3.8B Environmental factors and transpiration
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Explain why the bubble potometer results may overestimate the rate of transpiration.
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Total for this question: 2 marks
Lesson: 3.8B Environmental factors and transpiration
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12 Which Multiple choice 1 mark
3.8B Environmental factors and transpiration
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Which change would make a potometer bubble move more slowly?
(1) Choose one answer A Switching on a fanB Raising the temperatureC Covering the shoot with a clear plastic bagD Moving a lamp closerShow mark scheme
Total for this question: 1 mark
Lesson: 3.8B Environmental factors and transpiration
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