Most of economically improtant fibre yielding plants belong to family

Options

A. Cruciferae
B. Poaceae
C. Solanaceae
D. Malvaceae.

Answer

To answer the question about which family most economically important fiber-yielding plants belong to, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Options**: The question provides four options:
- A) Cruciferae (Mustard family)
- B) Poaceae (Grass family)
- C) Solanaceae (Potato family)
- D) Malvaceae (Mallow family)

2. **Analyzing the Cruciferae Family**:
- The Cruciferae family, also known as the mustard family, includes plants like mustard, cabbage, and broccoli.
- While this family is economically important for vegetables and oilseeds, it does not significantly contribute to fiber production.
- **Conclusion**: This option is not correct for fiber yielding plants.

**Hint**: Look for families known for their vegetable and oilseed contributions rather than fiber.

3. **Analyzing the Poaceae Family**:
- The Poaceae family, also known as the grass family, includes cereals like wheat, rice, and corn, as well as grasses and bamboo.
- This family is crucial for food production but does not have a significant role in fiber yielding.
- **Conclusion**: This option is also not correct for fiber yielding plants.

**Hint**: Consider the primary use of the plants in each family when determining their economic importance.

4. **Analyzing the Solanaceae Family**:
- The Solanaceae family, known as the nightshade family, includes plants like potatoes, tomatoes, and peppers.
- This family is important for vegetables and ornamental plants, but it does not contribute significantly to fiber production.
- **Conclusion**: This option is incorrect for fiber yielding plants.

**Hint**: Identify families that are primarily known for their vegetable and ornamental contributions.

5. **Analyzing the Malvaceae Family**:
- The Malvaceae family, also known as the mallow family, includes cotton, okra, and hibiscus.
- This family is particularly important for fiber production, as cotton is one of the most significant fiber crops globally, providing over 70% of the world's cotton supply.
- **Conclusion**: This option is correct as it is the family that includes most economically important fiber yielding plants.

**Hint**: Look for families that are specifically known for their fiber-producing members.

### Final Answer:
The most economically important fiber-yielding plants belong to the **Malvaceae** family.