The internal layer joining the primary walls of the two adjacent cells is known as

Which structure connects the cytoplasm of two adjacent cells?

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

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.

$RBC$ 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?

The addition of new molecules to the pre-existing cell wall is known as .........