Question

Which is not the function of cell wall?
I. Provides shape to the cell.
II. Protects the cell from mechanical damage and infection.
III. Helps in cell to cell adhesion/attachment.
IV. Provides barrier to undesirable macromolecules.
V. Imbibes water.

• A. Only V
• B. Only IV
• C. Only II, IV and V
• D. None

Answer 1

The correct option is D None

• The cell wall of plants is a rigid structure that provides tensile strength to the plants and provides them with support. They, therefore, provide the plant cells with support and protect them from mechanical damage.
  
• They are semi-permeable in nature and allows only certain substances to pass through.
• The cell walls mediate cell adhesion in plant cells. There are no transmembrane proteins for this purpose.
• The cell wall and protoplasm also help in the imbibition of water in plant cells.

So, the correct option is 'None'.