Question

Page No
are
The cell wall of scherenchyma tissue
thickened
due to
deposition of
which material​

Answer 1

Explanation:

This is after attaining maturity, Sclerenchymatous cells becomes dead due to the heavy deposition of Lignin on their cell walls. Sclerenchyma is a simple permanent tissue like Collenchyma and Parenchyma and a dead tissue which is mostly functioned for providing protection and support to the plant's body. They provide grittiness also.

So, the answer is:

$\LARGE{ \boxed{ \bf{ \green{Lignin}}}}$

But what is Lignin?

Lignin is a organic compound but not a carbohydrate which is mostly found in the addition with cell wall. They provide stiffness and support to the plant's body. As maturity increases, lignin concentration also increases. Hence, in the case of sclerenchyma, the deposition increases after attaining maturity.

Do you know? After Cellulose, Lignin is the second most abundant polymer found in plant's body.

Explore more about sclerenchyma !!

• They are dead simple permanent tissue.
• They have numerous pits present on the walls.
• They have two kinds of cells - Sclereids(grit cells) and Fibres.
• They are spindle shaped and have tapering ends.
• They are source of natural fibres like Hemp, coir etc.
• They are also present on the hard covering of seed and nuts and gives them grittiness.

And we are done !!

Answer 2

Answer:

Explanation:

Lignin

Sclerenchyma, in plants, support tissue composed of any of various kinds of hard woody cells. Mature sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin.