Sunn hemp fibre (Crotalaria juncea) is obtained from

Options

A. secondary xylem
B. secondary phloem
C. leaf
D. testa of seed

Answer

**Step-by-Step Solution:**

1. **Identify the Plant**: The question asks about Sunn hemp fiber, which is scientifically known as Crotalaria juncea.

2. **Understand the Origin**: Crotalaria juncea is commonly referred to as Indian hemp or brown hemp and is primarily found in India.

3. **Classify the Plant**: This plant belongs to the Fabaceae family, which is also known as the legume or pea family.

4. **Determine the Type of Plant**: Crotalaria juncea is classified as an annual plant, meaning it completes its life cycle in one growing season.

5. **Identify the Source of Fiber**: The fiber from Crotalaria juncea is known for being high quality and is more environmentally friendly than synthetic fibers.

6. **Locate the Fiber Source**: The fiber is specifically obtained from the stem of the plant.

7. **Identify the Tissue Type**: The fiber is derived from the secondary phloem of the plant, which is formed during secondary growth and contains vascular cambium.

8. **Conclusion**: Therefore, the correct answer to the question is that Sunn hemp fiber (Crotalaria juncea) is obtained from the secondary phloem.

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