Translocation: past paper questions
Real questions on translocation
The newest 10 of 10 written questions. Open one to see it on the real paper.
- 0610/41 · May/June 2026 · Q3a(i)[5]
Explain why radioactive carbon ( 14 C) was found in the roots but not in the top of the stem in plant A.
See it on the paper → - 0610/41 · May/June 2026 · Q3a(ii)[2]
Explain the purpose of plant B in Figure 3.1.
See it on the paper → - 0610/22 · October/November 2024 · Q17[1]
Which row is correct for translocation?
See it on the paper → - 0610/43 · October/November 2024 · Q2b[3]
Scientists investigated the effect of temperature on the rate of translocation. The data are shown in Table 2.1. Table 2.1 temperature / °C rate of translocation / cm per hour 15 7.3 20 13.8 25 16.7 30 17.1 Calculate the percentage change in rate of translocation between 15 °C and 30 °C. Give your answer to three signi...
See it on the paper → - 0610/43 · October/November 2024 · Q2c(i)[4]
Explain how translocation changes between spring and summer in the potato plant shown in Fig. 2.3. Use the terms source and sink in your answer.
See it on the paper → - 0610/22 · May/June 2020 · Q16[1]
What correctly describes the regions for translocation?
See it on the paper → - 0610/21 · October/November 2019 · Q16[1]
In plants, what is transported by translocation?
See it on the paper → - 0610/42 · October/November 2019 · Q2c[5]
Describe and explain the effect of removing the phloem on the translocation of sucrose in plants Q, R, S and T.
See it on the paper → - 0610/43 · October/November 2019 · Q2a(ii)[1]
State the name of the process that plants use to move sucrose from a source to a sink.
See it on the paper → - 0610/43 · October/November 2019 · Q2a(iii)[2]
Roots can be an example of a sink. Explain why sometimes roots act as a source rather than a sink.
See it on the paper →
What examiners said
This question was successfully answered by the majority of candidates. Some candidates incorrectly believed that starch is transported by translocation, not appreciating that starch is an insoluble substance.
— Examiner report, October/November 2019, 0610/21 Q16 (Cambridge)
Most candidates gave good descriptions of the data in Fig. 2.3 and Table 2.1 explaining that removal of the phloem prevented translocation of the labelled sucrose or that sucrose was only translocated when phloem was left intact. Very few answers referred to the leaf as the source of the sucrose or the shoot tips and roots as the sinks. Weaker answers stated that the movement of minerals occurred...
— Examiner report, October/November 2019, 0610/42 Q2(c) (Cambridge)
Although many candidates knew that sucrose moved by translocation, many incorrect responses were seen. The most common incorrect responses were transpiration, osmosis and active transport.
— Examiner report, October/November 2019, 0610/43 Q2(a)(ii) (Cambridge)
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