A grower placed plants of the same species and size under different light intensities. Temperature, humidity and air movement were kept constant. The mean results after 2 hours are shown.
| Light intensity in lux | Stomata open in % | Water lost by each plant in g |
|---|---|---|
| 2,000 | 24 | 3.1 |
| 8,000 | 55 | 6.4 |
| 14,000 | 82 | 9.4 |
Explain the relationship between light intensity, the percentage of stomata open and water loss shown in the table.
The plants were moved from a light intensity of 2,000 lux to 14,000 lux. Suggest how this change would affect the rate at which mineral ions are transported from the roots to the leaves. Explain your answer.
74 exam-style questions on AQA GCSE Biology 2.3 Plant tissues, organs and systems, covering 2.3.1 Plant tissues and 2.3.2 Plant organ system. Each one has a worked solution and a mark scheme showing where the marks go.