A scientist investigated two plant hormones, X and Y.
Separate samples of dormant clover seeds and mature, unripe apricots were exposed to each hormone. A control sample received no hormone.
The table shows the results after five days.
| Treatment | Seeds that germinated in % | Apricots that became ripe in % |
|---|---|---|
| No hormone | 12 | 8 |
| Hormone X | 78 | 10 |
| Hormone Y | 14 | 84 |
Which plant hormone is X and which plant hormone is Y?
Explain how the results support both answers.
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.