In this article we will study about the secondary structures of plant with the help of suitable diagrams. A. Stem of Aristo-lochia Sp. (Fig. 7.1): In the primary condition the stem reveals the features of a typical dicotyledonous stem, i.e., presence of uniseriate epidermis, well differentiated cortex, ring arrangement of vascular bundles which are distinctly collateral and open type, [...]
In this article we will study about the tissue systems seen in plants:- 1. Epidermal (Dermal) Tissue System 2. Fundamental or Ground Tissue System. Study of Epidermal (Dermal) Tissue System: This system consists of the outermost skin or epidermis of all plant organs. It represents the region of contact between the plant and the environment. It is primarily a protective [...]
In this article we will study about primary structures of plant with the help of suitable diagrams. (A) Stem of Cucurbita sp. (Fig. 6.1): The stem is wavy in outline and thus shows distinct ridges and furrows. The stem shows the following plan of arrangement of tissues in transverse section: 1. Epidermis: It is the outermost layer of the [...]