Middle lamella mainly composed of ?? Share with your friends Share 0 Priya Chauhan answered this Dear student, Middle lamella is composed of pectin (made of calcium & magnesium pectates) Regards 1 View Full Answer Rithika Laxmi answered this Dear student, Middle lamella is a pectin layer of cell wall present between the cell walls of two adjacent cells. It provides stability to the plant and helps in forming plasmodesmata between them. Regards 1