exÂ·peÂ·dite. (Äkâ²spÄ­-dÄ«tâ²) tr.v. exÂ·peÂ·ditÂ·ed, exÂ·peÂ·ditÂ·ing, exÂ·peÂ·dites. To speed up the progress of or execute quickly: expedite the review of a legal case; expedite a loan application.
The cortex, composed primarily of parenchyma cells, is the largest part of the primary root, but in most dicots (eudicots) and in gymnosperms that undergo extensive secondary growth, it is soon crushed, and its storage function assumed by other tissues.
ROOT SYSTEM:The underground part of the plant is called Root system.The underground main axis of the plant body is called Root.It is the prolongation of radicle of the embryo.It is positively geotropic or negatively phototropic.It is not differentiated into nodes & internodes.