In this article we will discuss about the ultrastructure of cell wall in plants. This will also help you to draw the structure and diagram of cell wall. The cell wall is a biphasic structure consisting of cellulose microfibril embedded in gel-like non-cellulosic matrix. The microfibrillar phase consists of cellulose (β1, 4-glucan) only and the ultrastructure of cell wall is [...]
In this article we will discuss about the symmetry of pollen and spore wall of plants. The term symmetry with relation to a pollen grain implies similarity of halves on either side of a median line or plane so far as aperture and ornamentation etc., are concerned. Most pollen and spores are symmetrical. As a rule, symmetric pollen and spores [...]
In this article we will discuss about the chemical composition and functions of plasma membrane. Chemical Composition of Plasma Membrane: The membrane is mainly composed of lipids, proteins and carbohydrates. Water makes about 29% of total weight. Robertson (1959) proposed that plasma membrane is three-layered structure where proteins form the outer and inner layers of membrane that encloses lipids to [...]