List of six eminent botanists who contributed to the phylogenetic system of plant classification:- 1. Adolf Engler (1844-1930) 2. John Hutchinson (1884-1972) 3. Armen Takhtajan (1911) 4. Arthur Cronquist (1919-1992) 5. Rolf Dahlgren (1932-1987) 6. Robert F. Thorne (1920). Botanist # 1. Adolf Engler (1844-1930): The best known and widely accepted phylogenetic system is that by Adolf Engler, Professor of [...]
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 [...]