A) cellulose
B) lipids
C) suberin
D) lignin
Correct Answer: C
Solution :
[c] Cellulose is the basic of the cell wall present in plants. The cell wall of almost all the organism are made up of cellulose, whereas lipids along with some proteins forms the basic building blocks of plasma membrane. Plasma membrane is semipermeable and it is not impervious to water. Lignin is a complex polymer which acts as a cement and hardens the cell wall. It provides flexibility, great tensile and compressional strength to the cell wall and makes the cell wall impermeable. It is present in sclereiichyma cells and not in cork cells. The walls of cork cells are heavily thickened with an organic substance, suberin. Suberin makes these cells impervious to water and gases.
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