Thorns and simple cymes are found in

Options

A. Bougainvillea
B. Cassia
C. Acacia
D. Citrus

Answer

To determine which plant has both thorns and simple cymes, we can analyze the options provided in the question step by step.

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Thorns**: These are modified stems that serve as a defense mechanism for plants.
- **Simple Cymes**: This is a type of inflorescence where the main axis terminates in a flower, and the lateral flowers bloom first, leading to a broad, flat-topped appearance.

2. **Analyze the Options**:
- **Option 1: Bougainvillea**:
- **Thorns**: Yes, Bougainvillea has thorns.
- **Inflorescence**: Bougainvillea has simple cymes.
- **Option 2: Cassia**:
- **Thorns**: Yes, Cassia has thorns.
- **Inflorescence**: Cassia typically has racemes, not simple cymes.
- **Option 3: Cactus**:
- **Thorns**: Cacti have spines, which are modified leaves, not true thorns.
- **Inflorescence**: Cacti do not have simple cymes.
- **Option 4: Citrus**:
- **Thorns**: Yes, Citrus plants can have thorns.
- **Inflorescence**: Citrus flowers are usually solitary, not in cymes.

3. **Identify the Correct Answer**:
- From the analysis, Bougainvillea is the only option that has both thorns and simple cymes.

### Conclusion:
The correct answer is **Bougainvillea**, as it possesses both thorns and simple cymes.