Nodulated roots are characteristic of family

Options

A. Fabaceae
B. Asteraceae
C. Poaceae
D. Solanaceae.

Answer

To answer the question "Nodulated roots are characteristic of which family?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Nodulated Roots":**
- Nodulated roots refer to roots that have nodules, which are small swellings that can contain symbiotic bacteria. These bacteria are often involved in nitrogen fixation.

2. **Identify the Function of Nodulated Roots:**
- The primary function of these nodules is to facilitate nitrogen fixation, which is crucial for plant growth, especially in nitrogen-poor soils.

3. **Consider the Options Given:**
- The options provided are:
- Option 1: Fabaceae
- Option 2: Asteraceae
- Option 3: Poaceae
- Option 4: Solanaceae

4. **Analyze Each Option:**
- **Fabaceae:** This family, also known as the legume family, is well-known for having nodulated roots due to their symbiotic relationship with nitrogen-fixing bacteria like Rhizobium.
- **Asteraceae:** This family, commonly known as the daisy family, does not typically have nodulated roots.
- **Poaceae:** This is the grass family, which also does not have nodulated roots.
- **Solanaceae:** Known as the nightshade family, this family does not feature nodulated roots either.

5. **Conclusion:**
- Based on the analysis, the family that is characterized by nodulated roots is **Fabaceae**. Therefore, the correct answer is **Option 1: Fabaceae**.

### Final Answer:
Nodulated roots are characteristic of the family **Fabaceae**.

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