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Transport mechanisms: CAIE A‑Level Biology questions

Every CAIE A-Level Biology exam question on 7.2 Transport mechanisms, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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240 questions

  1. Q1(a)(i)

    June 2024 · Paper 5

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 5, question 1(a)(i): Identify the independent variable in this investigation. [1]

  2. Q1(a)(ii)

    June 2024 · Paper 5

    6 marks7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 5, question 1(a)(ii): The student carried out the investigation in a laboratory with standard laboratory apparatus. Describe a method, using the apparatus shown in Fig. 1.1, that the

  3. Q1(a)(iii)

    June 2024 · Paper 5

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 5, question 1(a)(iii): Predict the effect of wind speed on the results of the investigation using the method you have given in (a)(ii). [1]

  4. Q1(b)(i)

    June 2024 · Paper 5

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 5, question 1(b)(i): The student used a different method to measure the rate of transpiration of Japanese spiraea. Fig. 1.2 shows the apparatus used. The leaf remained attached to t

  5. Q1(b)(ii)

    June 2024 · Paper 5

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 5, question 1(b)(ii): To improve the validity of the results, the student decided to measure the time taken for blue cobalt chloride paper to change colour on a greater number of lea

  6. Q5(a)

    June 2024 · Paper 2

    3 marks7.2 Transport mechanisms
    The whole paper ↗
    June 2024 Paper 2, question 5(a): Compare the results of the two species shown in Fig. 5.1. [3]

  7. Q29

    Specimen · Paper 1

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    Specimen Paper 1, question 29: Sucrose moves from a phloem sieve tube element into a root cell. Which changes to the water potential and the volume of liquid in the phloem sieve tube element

  8. Q30

    Specimen · Paper 1

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    Specimen Paper 1, question 30: Which statements about water movement in plants are correct? 1 Water can pass through cell walls containing layers of cellulose fibres. 2 Water can pass through

  9. Q32

    Specimen · Paper 1

    1 mark7.2 Transport mechanisms
    The whole paper ↗
    Specimen Paper 1, question 32: A maize crop is growing successfully in a field in which the water potential of the soil is –40 kPa. What is the most likely water potential of the cell sap in

  10. Q4(a)

    Specimen · Paper 2

    4 marks7.2 Transport mechanisms
    The whole paper ↗
    Specimen Paper 2, question 4(a): Describe the pathways by which water passes from the soil to the cells of the cortex shown in Fig. 4.1. [4]
All 10 questions on Transport mechanisms, as a list
  1. June 2024, Paper 5, Q1(a)(i) (1 mark): Identify the independent variable in this investigation. [1]
  2. June 2024, Paper 5, Q1(a)(ii) (6 marks): The student carried out the investigation in a laboratory with standard laboratory apparatus. Describe a method, using the apparatus shown in Fig. 1.1, that the
  3. June 2024, Paper 5, Q1(a)(iii) (1 mark): Predict the effect of wind speed on the results of the investigation using the method you have given in (a)(ii). [1]
  4. June 2024, Paper 5, Q1(b)(i) (1 mark): The student used a different method to measure the rate of transpiration of Japanese spiraea. Fig. 1.2 shows the apparatus used. The leaf remained attached to t
  5. June 2024, Paper 5, Q1(b)(ii) (1 mark): To improve the validity of the results, the student decided to measure the time taken for blue cobalt chloride paper to change colour on a greater number of lea
  6. June 2024, Paper 2, Q5(a) (3 marks): Compare the results of the two species shown in Fig. 5.1. [3]
  7. Specimen, Paper 1, Q29 (1 mark): Sucrose moves from a phloem sieve tube element into a root cell. Which changes to the water potential and the volume of liquid in the phloem sieve tube element
  8. Specimen, Paper 1, Q30 (1 mark): Which statements about water movement in plants are correct? 1 Water can pass through cell walls containing layers of cellulose fibres. 2 Water can pass through
  9. Specimen, Paper 1, Q32 (1 mark): A maize crop is growing successfully in a field in which the water potential of the soil is –40 kPa. What is the most likely water potential of the cell sap in
  10. Specimen, Paper 2, Q4(a) (4 marks): Describe the pathways by which water passes from the soil to the cells of the cortex shown in Fig. 4.1. [4]

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