A greenhouse worker records the water uptake of the same tray of plants at two stages of growth.
| Age of plants in days | Volume of water taken up in cm3\text{cm}^3cm3 | Monitoring time in hours |
|---|---|---|
| 10 | 144 | 12 |
| 20 | 270 | 15 |
What is the percentage increase in the rate of water uptake, in cm³ per hour, from day 10 to day 20?
The percentage increase is 46.7%.
The percentage increase is 33.3%.
The percentage increase is 50.0%.
The percentage increase is 87.5%.
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.