Vascular Cambium- A cylinder of meristematic tissue in woody plants that adds layers of secondary vascular tissue called secondary xylem and secondary phloem.
Cork Cambium- A cylinder of meristematic tissue in woody plants that replaces the epidermis with thicker, tougher cork cells.
Primary Growth- Growth in vascular plants resulting from the production of primary tissues by a primary meristem. Elongation of the plant body is usually a consequence of primary growth.
Secondary Growth - Growth in vascular plants from production of secondary tissues by a lateral meristem, usually resulting in wider branches and stems.
Auxin- A term that primarily refers to indoleacetic acid(IAA), a natural plant hormone that has a variety of effects, including cell elongation, root formation, secondary growth, and fruit growth.
Cytokinin- Any of a class of related plant hormones that retard aging and act in concert with auxin to stimulate cell division, influence the pathway of differentiation and control apical dominance.
Abscisic Acid- A plant hormone that slows growth, often antagonizing the actions of growth hormones. Two of its many effects are to promote seed dormancy and facilitate drought tolerance.
Gibberellin- Ant of a class of related plant hormones that stimulate growth in the stem and leaves, trigger the germination of seeds and breaking of bud dormancy and stimulate fruit development.
Tropism- A growth response that results in the curvature of whole plant organs toward or away from stimuli due to differential rates of cell elongation.
No comments:
Post a Comment