The continuity of cytoplasm from cell to cell is maintained by . . . . . . .

Which of the following is $NOT$ a function of the cell wall?
$(I)$ Provides shape to the cell.
$(II)$ Protects the cell from mechanical damage and infection.
$(III)$ Helps in cell-to-cell interaction.
$(IV)$ Provides a barrier to undesirable macromolecules.
$(V)$ Endosmosis of water.

Which one of the following is a non-protoplasmic cell inclusion?

Middle lamella is made up of

The main difference between plant and animal cells is:

Match the following columns regarding cell wall composition:

Column-$I$	Column-$II$
$P$. Algae	$I$. Absent
$Q$. Fungi	$II$. Chitin
$R$. Plants	$III$. Cellulose,Hemicellulose,Pectins,Proteins
$S$. Animals	$IV$. Cellulose,Galactans,Mannans,$CaCO_3$