Question

Read each of the statements carefully and choose the one that is true for the cell wall.

• A. The function of the middle lamella is to hold different neighbouring cells together.
• B. The cell wall is only known to provide shape and protection to the plant cell from infections.
• C. The primary wall disintegrates as the cell matures and the secondary wall is capable of growth.
• D. The algal cell wall is made up of cellulose, hemicellulose, pectins and proteins.

Answer 1

Answer: (A)

The middle lamella is a layer mainly of calcium pectate which holds or glues the different neighbouring cells together. The cell wall and middle lamellae may be traversed by plasmodesmata which connect the cytoplasm of neighbouring cells.