0654.B8.3.03 — Investigate and describe the effects of 4 Explain the effects on the rate of transpiration variation of temperature and wind speed on of var: past paper questions
Real questions on 0654.b8.3.03 — investigate and describe the effects of 4 explain the effects on the rate of transpiration variation of temperature and wind speed on of var
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0654/42 · October/November 2025 · Q2a(i)[3]
The air bubble moves along the capillary tube as water is lost by transpiration. Explain the effect that high wind speed conditions have on the rate of transpiration.
See it on the paper → - 0654/42 · October/November 2025 · Q2a(ii)[2]
The student repeats the experiment. The environmental conditions are no wind and a temperature of 25 °C. Suggest the effect on the distance moved by the air bubble compared to no wind and a temperature of 15 °C. Explain your answer. effect on distance explanation
See it on the paper → - 0654/42 · May/June 2025 · Q1e[3]
Explain the effects of high winds on transpiration rate in plants.
See it on the paper → - 0654/21 · May/June 2021 · Q7[1]
What is the effect of increasing humidity?
See it on the paper → - 0654/22 · May/June 2021 · Q7[1]
Which graph shows the effect of atmospheric humidity on the rate of transpiration if all other factors are kept constant?
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What examiners said
There was some confusion with some candidates stating that higher wind speeds decrease the transpiration rate. Only the strongest candidates were able to explain this phenomenon in terms of differences in concentration gradient.
— Examiner report, May/June 2025, 0654/42 Q1(e) (Cambridge)
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