In this article we will discuss about the internal structure of monocot stem with reference to a typical monocotyledon, the maize stem, and carina scape. 1. Maize Stems (Figs. 150 & 151): I. Epidermis: It is as usual single-layered with cuticularised outer walls. II. Ground Tissues: Next to epidermis there are two or three layers of sclerenchyma forming the hypodermis. [...]
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 [...]
In this article we will discuss about the internal structure of dicot roots with the help of diagrams. I. Epidermis: It is single-layered and composed of thin- walled cells. The outer walls of epidermal cells are not cutinised. Many epidermal cells prolong to form long hairy bodies, the typical unicellular hairs of roots. Epidermis of root is also called epiblema [...]