Let us learn about Monocotyledonous Stems. After reading this article you will learn about: 1. Regions of Monocotyledonous Stems 2. Features of Monocotyledonous Stems 3. Types. Regions of Monocotyledonous Stems: Stele: The vascular bundles of monocotyledonous stems, instead of being arranged in a cylinder as in dicotyledonous stems, are usually scattered throughout the stele, including the pith, so that there [...]
Secondary Growth in Aristolochia Stem (With Diagram)! It has been stated that this stem which is a liane, differs from the normal ones in the process of secondary growth. The most striking points of difference are the formation of only parenchymatous medullary rays by the interfascicular cambium, and consequent occurrence of secondary tissues in strands (Fig. 641). In the primary [...]
In this article, we propose to discuss about the secondary growth in monocotyledonous stem. Normally the vascular bundles of the monocotyledonous stems are closed ones. Thus due to absence of the cambium" they lack secondary growth in thickness and the vascular system is wholly composed of primary tissues. The bundles remain irregularly scattered in the ground tissues, forming an atactostele, [...]