| A | B |
|---|
| Abscission | Shedding of leaves or fruit. |
| Annual | Annuals complete their life cycle in less than one year and must be planted again. |
| Biennial | A plant that requires two growing seasons to complete its lifecycle. |
| Determinate | After a period of vegetative growth, flower clusters form at the shoot terminals so most growth to the shoot elongation stops. |
| Epigeal Emergence | Growing point is above the soil surface immediately on emergence. |
| Germinate | To begin to grow or sprout. |
| Growth | An irreversible increase in volume and/or weight. Plant growth occurs by an increase in cell numbers and cell size. |
| Hypogeal Emergence | Growing point remains below the soil surface for a time after emergence. |
| Indeterminate | Plants which bear the flower clusters laterally along the stem and in the axils of the leaves so the shoot terminals remain vegetative. The shoot continues to grow until it is stopped by senescence or some environmental influence. |
| Perennial | A plant or plant part that lives for more than two years. |
| Permanent Roots | Crown area which will grow from 1 to 1½ inches below the soil surface with little variation from planting depth. |
| Phenolic Compounds | Chemicals produced by plants that live in the desert to keep their seeds dormant until proper season for germination - when the rains come. |
| Primary Growth | Growth which takes place in young, herbaceous organs, resulting in an increase in length of shoots & roots. |
| Scarification | Chemical or physical treatment of seeds to break or weaken the seed coat enough for germination to occur. |
| Secondary Growth | Results in an increased girth as layers of woody tissue are laid down. |
| Senescence | The stage of development when deterioration occurs, leading to the death of an organism or organ. |
| Vernalization | Promotion of flowering by cold treatment to plants or imbibed seeds. |
