Question

Lignified elongated dead cells are ---------------------

• A. Parenchyma
• B. Collenchyma
• C. Sclerenchyma
• D. Epidermis

Answer 1

The correct option is C

Sclerenchyma

The correct option is C.

Explanation for correct option:

1. Sclerenchyma cells are permanent cells that are elongated, thin, and dead.
2. The cells are narrow and thick without any intercellular spaces in between them.
3. The cell wall contains lignin.

Explanation for incorrect option:

Option A:

1. Parenchyma cells are permanent cells, and their cell walls are thin and highly flexible.
2. They are loosely packed due to the presence of intercellular space.

Option B:

1. Collenchyma cells are elongated living cells.
2. Their cell walls are irregularly thick at corners.

Option D:

The epidermis is the outermost layer of the plant and is responsible for the protection of the plant.

Final answer:

Lignified elongated dead cells are sclerenchyma.