Question

Which of the following is an animal fibre ?

• A. Silk
• B. Cotton
• C. Jute
• D. Coir

Hint:

The two most common animal fibres are wool (from sheep) and silk (from silkworms). The most common plant fibres are cotton, jute, and linen. Memorizing these key examples helps in quick identification.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Fibres are classified based on their origin. Animal fibres are derived from animals, while plant fibres are derived from plants.
Step 2: Detailed Explanation:
Let's analyze the origin of each fibre:
(A) Silk: Silk is a natural protein fibre obtained from the cocoons of the larvae of the mulberry silkworm (\textit{Bombyx mori}). Since the silkworm is an insect, silk is an animal fibre.
(B) Cotton: Cotton is a soft fibre that grows in a boll, or protective case, around the seeds of cotton plants. It is a plant fibre.
(C) Jute: Jute is a long, soft, shiny vegetable fibre that is spun into coarse, strong threads. It is obtained from the stem of the jute plant. It is a plant fibre.
(D) Coir: Coir is a natural fibre extracted from the outer husk of coconuts. It is a plant fibre.
Step 3: Final Answer:
Among the given options, only silk is derived from an animal source.