A grower tests gibberellin on dormant seeds. The table shows the results after five days.
Table
| Treatment | Seeds tested | Seeds germinated |
|---|---|---|
| Water | 80 | 20 |
| Gibberellin solution | 120 | 90 |
Which statement correctly compares the percentages that germinated?
gibberellin gave 90%, which is three times the control percentage
gibberellin gave 75%, which is four times the control percentage
gibberellin gave 75%, which is three times the control percentage
gibberellin gave 90%, which is four times the control percentage
105 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.