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Each of the following terms has some ana...

Each of the following terms has some anatomical significance. What do these terms mean? Explain with the help of line diagrams.
(A) Plasmadesmoses / Plasmodesmata
(B) Middle lamella
(C) Secondary wall

Text Solution

Verified by Experts

(A) Plasmodesmata :
Structure : It is a narrow pathway connecting cell wall between two cells.
Function : It makes transport and communication possible between two nearly cells.
Plasmodesmata allow molecules to travel of between plant cells through the symplastic pathway.

(B) Middle lamella :
Structure : It is a layer located in cell wall. It is mainly made up of calcium pectate.
Function: It connects two near by cells.

(C) Secondary Wall :
Structure : It is such a wall that cannot expand. It is made up of hemicellulose fibre in cell wall of plant cell.
Function: It provides firmness to cells.
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