The below mentioned article provides an outline of internal structure of stem of both dicotyledons and monocotyledons type. The embryo develops into a plant with root-stem axis and the appendages. In fact, three important organs of a plant are the stem, the leaves and the root. The continuity of the tissues, and particularly the vascular system, has been discussed in [...]
The below mentioned article will highlight the three types of modification of stem. They are: (1) Underground Modifications for Perennation, Vegetative Propagation and Storage (2) Sub Aerial Modifications for Vegetative Propagation and Perennation and (3) Aerial Modifications. A. Underground Modifications for Perennation, Vegetative Propagation and Storage: A number of herbaceous plants find it impossible to survive above ground during unfavourable [...]
In this article, we propose to discuss the two forms of stems. They are: (1) Erect Forms and (2) Weak Forms. A. Erect Forms: A majority of plants have the erect habit. These again may be subdivided into herbs, shrubs and trees according to the strength of the stem. i. Herbs: The herbaceous stem is extremely succulent. The plant is [...]