A number of plants develop unique adaptive modifications to overcome the various environmental stress. These modifications include alteration of gross morphological features as well as anatomical structures. Some examples of anatomical changes are given: A. Loaf Anatomy of Nerium sp. (Fig. 8.1): The T.S. view of Nerium leaf shows the following layers of tissues: 1. Epidermis: Both upper and lower [...]
In this article we will discuss about the anatomical structure of some dicotyledonous stems that show secondary growth. 1. Anatomy of Bignonia Stem (Fig. 7.4): The following tissue layers are seen in the T.S. of the stem: 1. Epidermis: It is uniseriate and cuticularised. It is wavy in outline. 2. Cortex: It is parenchymatous and bounded internally by a starch [...]
Here is an essay on the plant cell. If a thin slice is taken from any part of a plant and observed under a microscope, it is found to be composed of many chambers or compartments resembling the chambers of a honeycomb. Each of these chambers is called a cell. A plant cell has usually an outer firm non-living boundary [...]