Question

The fibres of commercial importance are obtained from

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

Answer 1

Answer: (D)

Sclerenchyma is the tissue which makes the plant hard and stiff. It is the supporting tissue in plants and is composed of dead cells with highly thickened cell walls (due to extensive deposition of lignin).Two types of sclerenchyma cells exist: fibers and sclereids.

Sclerenchyma fibers are of great economic importance, since they constitute the source material for many fabrics (e.g. flax, hemp, jute, etc).

Hence the correct option is D.