Each of the following terms has some anatomical significance.

Question:

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 microscopic channels between two cells through the cell wall are called Plasmodesmata.

b. Middle lamella – It is a layer in the cell wall and is made of calcium pectate (mainly) and magnesium pectate.

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

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