Four lines of the same plant species have the same total number of stomata on each leaf. The plants are otherwise identical and are grown in direct sunlight under the same conditions.
| Plant line | Stomata on upper epidermis (%) | Stomata on lower epidermis (%) |
|---|---|---|
| W | 5 | 95 |
| X | 25 | 75 |
| Y | 50 | 50 |
| Z | 95 | 5 |
Which plant line would be expected to lose water vapour at the lowest rate?
Plant line Z, with 95% of its stomata on the upper epidermis
Plant line W, with 5% of its stomata on the upper epidermis
Plant line X, with 25% of its stomata on the upper epidermis
Plant line Y, with 50% of its stomata on the upper epidermis
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.