Question 1
| Soil water level | Mean root length (cm) | Mean shoot height (cm) |
|---|---|---|
| dry | 18 | 9 |
| medium | 12 | 14 |
| wet | 8 | 15 |
A student grew bean seedlings for three weeks in soil kept at three water levels, with all other conditions the same (an invented data set). Which conclusion is best supported by the table?