Question

give 3 pts of difference between - parenchyma, collenchyma and sclerenchyma.

Answer 1

Parenchyma	Collenchyma	Sclerenchyma
Very thin cell wall.	Unevenly thickened cell wall.	Thick cell wall.
The cells are loosely packed.	Little space between cells.	No intercellular spaces present, cells are tightly packed.
The cell wall is made up of cellulose.	The cell wall is made up of hemicellulose and pectin.	The cell wall is made up lignin.
Most of the plant tissues are made up of parenchyma cells.	Collenchyma cells make up the epidermal layers.	The outer woody stem portion of large trees is made up of sclerenchyma cells.
Cells are living.	Cells are living.	Matured cells are dead.