| A | B |
|---|
| zone of elongation | The area immediately behind the root tip (apical meristem) |
| zone of maturation | The area immediately behind the zone of elongation |
| Apical meristem | Growth tissue that is found near the root cap |
| Imbibition | seeds absorb water before germination |
| Scarification | Sratching or nicking of seed coat to induce germination |
| Coleoptile | surrounds the young shoot in monocots |
| Indeterminate growth | ability of certain parts to grow indefinitely |
| Determinate growth | parts of a plant that stop growing after reaching a certain size |
| Winter Dormancy | The response plants have to the shortening of the length of the day |
| Short-day plants | flower when the night length is equal to or greater than the critical length for flowering |
| Long-day plants | flower when night length is equal to or less than the critical length for flowering |
| Intermediate-day plants | flower when the day length is neither too long nor too short |
| Day Neutral plants | initiate flowering due to other simulus and to the amount of daylight |
| Vernalization | a response to temperature that affects flowering |
| Circadian Rhythms | involves the time of the day as opposed to the time of year |
| Tropism | tendency to move toward |
| Phototropism | growing toward light |
| Gravitropism | growing downward in response to gravity |
| Thigmotropism | response to touch |
| Hydrotropism | growing toward water |
| Photochrome | a change in chemicals |
| Auxin | stimulates the elongation of stems and roots |
| Cytokinins | inhibits the elongation of stems, causing them to grow thicker |
| Gibberellin | responsible for bolting in plants |
| Photoperiodism | The response that plants have to the amount of daylight or darkness |
