The element present in the middle lamella is

Which of the following organisms has cellulose as the main component of its cell wall?

Which structure provides protection to the cell and holds the outer parts of the cell in place?

$A$ 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 is not a characteristic of plant cell walls?

Plasmodesmata are ........