What is the middle lamella in a plant cell composed of?

What is the outermost layer of a plant cell?

$RBC$ 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?

$A$ student placed two cells in the same solution in two different containers. The observation was given in the table:

Container	Observation
$1$	Cell burst
$2$	Cell does not change its shape

Which structure maintains the shape of the cell present in container $2$ and provides the most significant difference between the two cells?

Which of the following is $NOT$ found in the composition of the plant cell wall?

Which one part of the cell is non-living?