Select the correct statement regarding cell wall of plant cells

Options

A. Primary cell wall is chiefly composed of a soluble fibrous polysaccharide called suberin.
B. Secondary cell wall is mainly composed of lignin and is deposited on the outer surface of primary wall.
C. Pits are present in primary walls whereas they are absent in secondary walls.
D. The primary cell walls of adjacent cells are cemented through middle lamella which is composed of calcium and magnesium pectate.

Answer

D