In this article we will discuss about the structure of a cell wall in plants. This will also help you to draw the structure and diagram of cell wall in plants. Gross Structure of Cell Wall: A plant cell may consist of either primary wall only or the cell may contain both primary and secondary walls (Fig. 3.1). i. Primary [...]
Polarity is defined as the condition of having distinct poles in a pollen grain. Jackson in 1928 assumed that a pollen grain points to the poles like Silphium. Silphium laciniatum, also known as compass plant, has leaves that 'turn their edges north and south and avoid the mid-day radiation' —Willis. Pollen mother cell after meiosis forms four pollen grains that [...]
In this article we will discuss about the origin of cell wall in plants. Initially middle lamella creates a new boundary between the two-daughter nuclei of a dividing cell. The components of cell wall deposit on either side of middle lamella to form the cell wall. In a non-vacuolated cell, nucleus is usually present at the centre where it divides. [...]