Secondary Growth in Dicotyledonous Root (With Diagram)! The roots of some herbaceous dicotyledons and of all gymnosperms and woody dicotyledons show secondary increase in thickness, whereas most of the monocotyledonous roots, like those stems, are entirely primary. The secondary tissues formed in the dicotyledonous roots are fundamentally similar to those of the stem, but the process is initiated in a [...]
The below mentioned article provides an outline of the internal structure of root. The root develops from the radicle of the embryo. Due to the fact that the extreme tip of the root remains covered by a cap, the apical meristem here is subterminal, as opposed to the terminal apical meristem of the stem. However, the primary body consists of [...]
Modifications of Roots for Physiological and Mechanical Functions! (A) Modifications to Carry on Special Physiological Functions: 1. Storage Roots: Storage roots become fleshy by the accumulation of stored up food. Very often the aerial parts of these plants die out during unfavourable seasons and, when the season becomes favourable again, new buds sprout either from the underground fleshy root itself [...]