Robert Hooke discovered the . . . . . . of a cell.

The mineral constituent of the cell wall is

The interfibrillar material of the secondary wall is chiefly made up of

$RBC$ and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells. What changes would be observed in them?

Match the following columns correctly.

Column-$I$ (Cell wall)	Column-$II$ (Constituent)
$a$. Algae	$i$. Chitin
$b$. Fungi	$ii$. Mannans
$c$. Other plants	$iii$. Pectin
$d$. Middle lamella	$iv$. Cellulose

Which of the following structures forms an effective transport pathway between two adjacent cells?