In this article we will discuss about the permanent tissue in plants:- 1. Simple Tissue 2. Complex Tissue. Permanent tissues are simple or complex, according to the nature of component cells. A simple permanent tissue is composed of only one type of cells and is thus homogeneous; whereas the complex permanent tissue is heterogeneous, consisting of more than one type [...]
In this article we will discuss about the structure of leafs with the help of diagrams. Dorsiventral Leaf: Leaves having two surfaces, dorsal and ventral, are called dorsiventral. The upper surface of these leaves is directly illuminated by the sun's rays. (Fig. 156) A thin section of such a leaf would show the following structure: I. Epidermis: There are two [...]
In this article we will discuss about the two typical dicotyledonous plants which been selected for the study of internal structure of stem with the help of diagrams. 1. Young Sunflower Stems (Figs. 146 & 147): If a thin and uniform transverse section is taken from a young sunflower stem and observed under the microscope, the following plan in the [...]