A supplier transports unripe peaches for six days. The supplier wants no more than 15% of the peaches to be ripe on delivery, but at least 85% to be ripe two days later.
The supplier tests three treatments.
| Treatment | Use of ethene | Peaches ripe on delivery (%) | Peaches ripe two days after delivery (%) |
|---|---|---|---|
| A | Ethene remains around the peaches throughout | 72 | 95 |
| B | Ethene is removed throughout and none is added after delivery | 9 | 28 |
| C | Ethene is removed during transport and added on delivery | 11 | 90 |
Suggest which treatment the supplier should use. Use the data and your knowledge of ethene to justify your answer.
87 exam-style questions on AQA GCSE Biology 5.4 Plant hormones, covering 5.4.1 Control and coordination and 5.4.2 Use of plant hormones (HT only). Each one has a worked solution and a mark scheme showing where the marks go.