A student recorded water loss from similar leaves of the same plant species. Some leaves had their hairs intact and hairs had been removed from the others. The leaves were tested in still air and moving air, with other conditions kept the same.
| Leaf condition | Water loss in still air (g h−1^{-1}−1) | Water loss in moving air (g h−1^{-1}−1) |
|---|---|---|
| Hairs intact | 0.12 | 0.20 |
| Hairs removed | 0.18 | 0.36 |
Explain the effect of moving air on water loss from leaves with their hairs intact.
Explain how leaf hairs reduce water loss. Use the results to support your answer.
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.