Question

write the differences between collenchyma and sclerenchyma on the basis of their cell wall

Answer 1

Collenchyma have thin cell wall made up of cellulose and pectin.
Sclerenchyma is made up of lignin and have thick cell wall.
Collenchyma have primary cell walls but sclerenchyma have secondary cell wall.
Thanks.....

Answer 2

Paranchyma - 1) it has a primary cell wall 

                     2) cell walls are thin 

                     3) cell wall is made up of cellulose

Collemchyma-1) it also  has a primary cell wall

                     2) cell walls are thick at corners 

                     3) cell wall is made up of cellulose

Sclerenchyma-1) it has a secondary cell wall  

                      2) cell wall is very thick reducing the cellular space of the                                 cell 

                      3) cell wall is made up of "lignin"