Which of the following is not a bast fiber ?

Question

Accepted Answer

Coir is the correct answer as it is not a bast fiber. Here's a detailed explanation:

1. **Coir (Option 1)**: Coir is a natural fiber extracted from the husk of coconuts. It is not a bast fiber because it does not come from the phloem or the "bast" of a plant. Instead, coir is derived from the outer shell of the coconut, making it a seed fiber. Coir is commonly used in products like mats, brushes, and mattresses due to its durability and water resistance.

2. **Jute (Option 2)**: Jute is a bast fiber, which means it is obtained from the phloem or the inner bark of the plant stem. Specifically, jute is extracted from the Corchorus plant. It is one of the most widely used bast fibers, known for its strength and biodegradability, and is commonly used in making burlap, hessian, and other similar products.

3. **Hemp (Option 3)**: Hemp is also a bast fiber. It is derived from the Cannabis sativa plant and is known for its strength and versatility. Hemp fibers are used in a variety of applications, including textiles, ropes, and even building materials. The fiber is extracted from the stalk of the hemp plant, which classifies it as a bast fiber.

4. **Flax (Option 4)**: Flax is another example of a bast fiber. It is obtained from the stem of the flax plant and is used to produce linen. Flax fibers are known for their strength, durability, and ability to wick moisture, making them ideal for high-quality textiles.

In summary, coir is not a bast fiber because it is derived from the coconut husk, a seed fiber, whereas jute, hemp, and flax are all bast fibers obtained from the stems of their respective plants. This supports Option 1 as the correct answer.