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

  1. Plasmadesmoses/ Plasmodesmata
  2. Middle lamella
  3. Secondary wall

 

Answers (1)

. (a) Plasmodesmata are channels that directly connect the cytoplasm of one plant cell to another. It helps in establishing communication and transportation of food and other important minerals from one plant cell to another.

(b) Middle lamella consists of pectin which acts as a glueing agent helping in holding cell walls of two adjacent cells together.

 

(c) Secondary walls are composed of cellulose, lignin and hemicellulose, which provides strength to the plant and protects it from any mechanical stress.

 

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