Which of the following is not a dicot ?

Options

A. Eucalyptus
B. Sunflower
C. Acacia
D. Banana

Answer

To determine which of the following plants is not a dicot, we need to analyze the options provided: eucalyptus, sunflower, acacia, and banana.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Dicots (Dicotyledons)**: These plants have two cotyledons in their seeds. They typically exhibit broad leaves with a net-like vein pattern, a taproot system, and can increase in diameter due to the presence of cambium.
- **Monocots (Monocotyledons)**: These plants have one cotyledon in their seeds. They usually have narrow leaves with parallel venation, a fibrous root system, and lack cambium, which means they cannot increase in diameter.

2. **Analyze Each Option**:
- **Eucalyptus**: This is a dicot. It has two cotyledons and exhibits characteristics typical of dicots.
- **Sunflower**: This is also a dicot. It has two cotyledons and shows the typical features of dicotyledonous plants.
- **Acacia**: This is another dicot. Like the others, it has two cotyledons and fits the dicot characteristics.
- **Banana**: This is a monocot. It has only one cotyledon, exhibits parallel leaf venation, and has a fibrous root system.

3. **Conclusion**:
- Among the given options, **banana** is the only plant that is not a dicot; it is a monocot.

### Final Answer:
The correct option for the question "Which of the following is not a dicot?" is **banana**.

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