In this essay we will discuss about the anatomy of some dicotyledonous stems:- 1. Sunflower Stem 2. Cucurbita Stem 3. Leonurus Stem 4. Calotropis Stem 5. Enhydra Stem. Essay # 1. Anatomy of Sunflower Stem: Transverse sections through the internode of a young sunflower stem (Helianthus annuus) exhibits the following tissue arrangements from the periphery to the centre (Fig. 5.86 [...]
In this article we will discuss about the secondary growth in certain dicotyledonous stem:- 1. Aristolochia 2. Cucurbita. Dicotyledonous Stem # 1. Aristolochia: Aristolochia is a liane (woody climber) and its secondary growth in stem differs from the normal woody plants. The most striking differences are the formation of only parenchymatous medullary rays by the interfascicular cambium, and vascular tissues [...]
Read this essay to learn about the growth in intrastelar and extrastelar region of dicotyledonous stems. Essay # 1. Growth in Intrastelar Region of Dicotyledonous Stems: a. Cambium: Cambium is a lateral meristem the cells of which are in a layer or strips or cylinder at stelar or extrastelar region with chiefly periclinal mode of cell division. Cambium is formed [...]