In this article we will discuss about the secondary growth in dicot stem. A. In the Intra-Stelar Region: The secondary growth always begins in the intra-stelar region. The meristematic cells of the cambium of the vascular bundles, called fascicular cambium, begin to divide and produce new cells on the outer and inner sides. (Fig. 158) Almost simultaneously a few parenchymatous [...]
The upcoming discussion will update you about the morphological difference between the stem and the root. Difference # The Stem: 1. It develops from the plumule of the embryo. 2. It is the ascending axis of the plant. 3. The stem is usually green in colour and grows towards light. 4. It has distinct nodes and internodes and bears similar [...]
The following points highlight the three main types of modifications of stems. The types are: 1. Sub Aerial Modifications 2. Underground Modifications 3. Aerial Modifications or Metamorphosed Stems. Type # 1. Sub Aerial Modifications: Slender branches develop from the axils of the leaves of some plants which usually run horizontally on the surface of the soil. Most of them are [...]