Read this essay to learn about the korper-kappe theory of root apex. The theory was put forward by Schuepp (1917). It is similar to the tunica-corpus theory of the shoot apex. It is based on differences in the planes of cell division. The theory says that the cells in the root apex divide in a pattern called T-divisions. The outer [...]
Read this essay to learn about the arrangements of primary tissues in the roots of plants. 1. Epiblema: The dermal tissue system is called epiblema or rhizodermis as it differs from that of the shoot in origin, structure and function. The cells of this layer are elongated, thin-walled with a thin cuticle on the outer cell wall and devoid of [...]
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 [...]