Which of pair is not having similar types of roots ?

Options

A. Mustard , Maize
B. Mustard , Grass
C. Mustard , Bean
D. Jowar , wheat

Answer

To solve the question "Which of the pairs is not having similar types of roots?", we will analyze each option provided:

1. **Mustard and Maize**
- Mustard is a dicot plant and has a **tap root system**.
- Maize (corn) is a monocot plant and has a **fibrous root system**.
- **Conclusion**: These two plants do not have similar types of roots.

2. **Mustard and Grass**
- Mustard is a dicot and has a **tap root system**.
- Grass is also a monocot and typically has a **fibrous root system**.
- **Conclusion**: These two plants do not have similar types of roots.

3. **Mustard and Bean**
- Both Mustard and Bean are dicots and have a **tap root system**.
- **Conclusion**: These two plants have similar types of roots.

4. **Jowar and Wheat**
- Both Jowar (sorghum) and Wheat are monocots and have a **fibrous root system**.
- **Conclusion**: These two plants have similar types of roots.

Based on the analysis, the pair that does not have similar types of roots is **Mustard and Maize**.

### Final Answer:
The pair that is not having similar types of roots is **Mustard and Maize**.