| A | B |
|---|
| Auxin | made in apical meristems |
| Auxin | important for phototropism |
| Auxin | stimulates cell elongation |
| Cytokinins | produced in growing tissue |
| Cytokinins | stimulates cytokinesis |
| Cytokinins | delays senesence (aging) |
| Gibberellins | made in roots and young leaves |
| Gibberellins | important in bolting |
| Gibberellins | causes flower and fruit development |
| Abscisic Acid | maintains dormancy in seeds |
| Abscisic Acid | slows growth |
| Abscisic Acid | closes stomata |
| Ethylene | gas |
| Ethylene | causes fruit ripening |
| Ethylene | promotes leaf abscission (loss of leaf) |
| Ethylene | one bad apple spoils the whole bunch |
| Brassionsteriods | similar to animal sex hormones |
| Brassionsteriods | slows abscission |
| Brassionsteriods | causes both cell elongation and cell division |
| Photoperiodism | relative length of night and day and the resulting physiological response |
| Critical Night Length | length of NIGHT controls flowering and other responses |
| Systematic Acquired Resistance | provoked by chemicals that sound the alarm |
| Systematic Acquired Resistance | alarm hormones |
