Question

In sclerenchyma, the cell wall is

• A. Cutinised
• B. Suberised
• C. Pectinised
• D. Lignified

Answer 1

The correct option is D

Lignified

The correct option is D.

Explanation of the correct option:

1. Sclerenchyma cells have thick, lignified secondary cell walls.
2. They are long and narrow structurally.
3. Due to the presence of lignin, the cell walls are thick.
4. The lignified wall provides stiffness to sclerenchyma cells and aids in mechanical support.
5. They don't have an intercellular space.
6. These tissues can be found in the stem, on nuts and seeds, around leaf veins, and around vascular bundles.

Explanation of the incorrect options:

Option A:

Cutin and waxes are fatty substances deposited in the walls of epidermal cells, forming a waterproof outer layer called the cuticle.

Option B:

1. Suberised cell walls are the walls of cells that have been deposited with suberin.
2. Suberin is found in the radial and transverse cell walls of endodermal cells in roots.

Option C:

1. Plant cell walls are made up of acidic sugar backbones with neutral sugar side chains.
2. Pectin crosslinking regulates wall porosity and plant morphogenesis, and it aids cell adhesion and hydration.

Final Answer: In sclerenchyma, the cell wall is lignified cell wall.