What is the nature of the cell wall in terms of permeability?

In a plant cell,the deposition of which substance on the primary cell wall leads to the formation of the secondary cell wall?

Which of the following substances is $NOT$ deposited in the secondary cell wall?

$A$ protoplast is a cell

Give information about the chemical composition and function of the cell wall.

Each of the following terms has some anatomical significance. What do these terms mean? Explain with the help of line diagrams.
$(A)$ Plasmodesmata
$(B)$ Middle lamella
$(C)$ Secondary wall