Which one of the following is present outside the plasma membrane but inside the cell wall?

$A$ plant cell is distinguished from an animal cell by the presence of which of the following features?

Plasmodesmata are........

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.

Cell wall is absent in:

Which one is not a component of a normal plant cell wall?