Question

Difference between collenchymas and sclerenchyma.

Answer 1

1. Collenchyma is made up of living cells.
2. Sclerenchyma cells are generally dead.

Collenchyma	Sclerenchyma
Cells have thin primary walls with some areas of secondary thickening.	Cells have thick lignified secondary walls and die when they mature.
It is in the form of oval, spherical or polygonal cells.	It is in the form of sclereids and fibers.
Provides mechanical support to young growing parts.	Provides mechanical support to the plant organs.
Wall thickening consists of cellulose.	Wall thickening can be of cellulose, lignin or both.
Pits and simple and straight.	Pits are simple and oblique.