The walls of cork cells are thickened by the deposition of an organic substance which make these cells impermeable to water and gases. This substance is

The walls of cork cells are thickened by the deposition of an organic

1.	The walls of cork cells are thickened by the deposition of an organic substance which make these cells impermeable to water and gases. This substance is
A.	Pectin
B.	Suberin
C.	Lignin
D.	None of these
Answer» C. Lignin

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The walls of cork cells are thickened by the deposition of an organic substance which make these cells impermeable to water and gases. This substance is

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