Question

Natural plant fiber originating from leaf is:

• A. Coir
• B. Sisal
• C. Lyocell
• D. Alpaca

Hint:

Common leaf fibers include Sisal, Abaca (Manila hemp), and Pineapple (Piña).
These fibers are typically coarse and highly durable, making them ideal for ropes, cordage, and heavy-duty mats.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Natural plant fibers are classified based on the part of the plant from which they are extracted.
These categories include seed fibers, bast (stem) fibers, leaf fibers, and fruit/husk fibers.

Step 2: Detailed Explanation:
Let us analyze each of the listed fibers:
- Coir (A): This fiber is extracted from the outer fibrous husk of the coconut fruit.
It is classified as a fruit/husk fiber. Thus, (A) is incorrect.
- Sisal (B): This stiff, strong fiber is obtained from the leaves of the agave plant (Agave sisalana).
It is extracted through a process called decortication, where the leaf tissue is scraped away to isolate the longitudinal vascular fibers.
It is classified as a leaf fiber. Thus, (B) is correct.
- Lyocell (C): This is a regenerated cellulose fiber made from wood pulp.
It is classified as a semi-synthetic or manufactured fiber, not a natural plant fiber. Thus, (C) is incorrect.
- Alpaca (D): This is a protein-based animal fiber obtained from the fleece of the alpaca. Thus, (D) is incorrect.
Therefore, Sisal is the natural plant fiber originating from leaves.

Step 3: Final Answer:
Sisal is the natural plant fiber obtained from the leaves of the plant.