Question

Main component of middle lamella is?

• A. Magnesium pectate
• B. Calcium pectate
• C. Calcium carbonate
• D. Calcium oxalate

Answer 1

The correct option is A Magnesium pectate

The middle lamella is a pectin layer which cements the cell walls of two adjoining plant cells together. It is the first formed layer which is deposited at the time of cytokinesis. The cell plate that is formed during cell division itself develops into middle lamella or lamellum. In plants, the pectins form a unified and continuous layer between adjacent cells. Frequently, it is difficult to distinguish the middle lamella from the primary wall, especially in cells that develop thick secondary walls. The middle lamella is made up of calcium and magnesium pectates.

So the correct option is 'Mg pectate'.