Each of the following terms has some anatomical significance. What do these terms mean? Explain with the help of line diagrams.
Each of the following terms has some anatomical significance. What do these terms mean? Explain with the help of line diagrams.

a. Plasmodesmata

b. Middle lamella

c. Secondary wall

Solution:

a. Plasmodesmata – A cytoplasmic junction between two cells through the cell wall are called Plasmodesmata. With the help of it the symplastic movement takes place.

b. Middle lamella – It is a layer in the cell wall and is made of calcium pectate (mainly) and magnesium pectate.It provides structural support to the plant’s cell wall.

c. Secondary wall – this is a non-extensible layer. It is made of hemicelluloses. It provides rigidity to the cell.

solution