Which layer is formed first either middle lamella or primary cell wall?

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Solution

Middle Lamella:
Located between the double cell wall of the neighboring cells, the middle lamella is the first layer of the wall to develop.
As it is the outer layer out of the three layers of the cell wall, the middle lamella serves as the portion that connects the neighboring cells.
The cell plate formed at the time of cell division during cytokinesis develops into middle lamella.
It is made up of calcium and magnesium pectate.

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