Question

The hardness in plants is due to deposition of 

A. Suberin

B. Pectin 

C. Lignin

D. Xylen 

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Answer 1

Your Correct Answer is option C

Extra Information

Option A Suberin

=> It is impermeable to water.

=> It is made up of fat.

=> It deposits on cork cells.

Option B Pectin

=> It is heteropolysaccharide.

=> It is found in cell wall.

=> Calcium and magnesium are the main Pectate which form middle lamilla in plants.

Option C Lignin

=> The reason behind hardness of plants is lignin. In many secondary walls especially those of xylem cell wall becomes hard and thick due to development of Lignin.

=> With the increase amount of lignin deposition protoplasm is lost.

=> It is permeable to water.

Option D Xylen

=> It is a group of Hemicellulose that are found in plant cell wall.

=> It is polysaccharide of xylose that is C5H10O5.

Answer 2

Answer:

Answer :

C. Lignin .

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