In this article we will discuss about:- 1. Distribution and Arrangement of Fibre 2. Shape, Structure and Content of Fibre 3. Types 4. Functions 5. Sources and Uses. Fibre is narrow, elongated cell with thick lignified wall and narrow lumen tapering to a wedge-shape at both ends. Distribution and Arrangement of Fibre: Fibre occurs in the ground and vascular tissues [...]
The following points highlight the top six factors influencing differentiation of sclereids cells in plants. The factors are: 1. Ageing 2. Wounding 3. Position 4. Osmotic Pressure 5. Enzyme 6. Hormone. Factor # 1. Ageing: In the barks many parenchyma cells change to brachysclereids. It is regarded that the sclereid differentiation is due to ageing of the tissues. Factor # [...]
Parenchyma (Figs. 8.1, 8.6) is a cell and tissue type in which the cells have only thin primary walls; the cells are unspecialized, lack the characteristic wall of collenchyma and the secondary walls of sclerenchyma; the cells have live nucleate protoplast concerned with various physiological activities in plants; the cells are meristematic, or permanent, simple homogeneous (i.e. composed of one [...]