The three of them are Simple tissues that have only one type of cell present.
Differences between the tissues on the basis of their cell wall –
Parenchyma – They are living cells with Cellulose present in their cell wall.
Collenchyma – They are thin walled living cells with an uneven cell wall made of Pectin, Cellulose and Hemicellulose
Sclerenchyma – They are dead cells and have a thick and hard cell wall made of lignin.
Final Answer :
The cell wall of Parenchyma is made up of Cellulose while Collenchyma has a cell wall made of Cellulose, Pectin and Hemicellulose.
Sclerenchyma has a cell wall made of lignin.
