A student measured the mean rate of water uptake by similar leafy shoots at different air speeds. Light intensity, temperature and relative humidity were kept constant.
| Air speed (m/s) | Mean rate of water uptake (cm³/h) |
|---|---|
| 0.0 | 0.6 |
| 1.0 | 0.9 |
| 2.0 | 1.3 |
| 3.0 | 1.6 |
Describe the relationship between air speed and the mean rate of water uptake.
Explain the relationship shown in the table.
80 exam-style questions on Edexcel GCSE Biology 6.2 Transport in plants, covering 6.2.1 Root hair cell adaptations, 6.2.2 Structure of xylem and phloem, 6.2.3 Transpiration and stomata, 6.2.4 Translocation of sucrose, 6.2.5 Leaf structure for photosynthesis, 6.2.6 Environmental factors on water uptake, 6.2.7 Rate calculations for transpiration, and 6.2.8 Plant adaptations to extreme environments. Each one has a worked solution and a mark scheme showing where the marks go.