Verticillate / whorled phyllotaxy is found in

Options

A. Psidium
B. Mango
C. Nerium
D. Sunflower

Answer

To determine which plant exhibits verticillate or whorled phyllotaxy, we need to follow these steps:

### Step-by-Step Solution:

1. **Understand Phyllotaxy**:
- Phyllotaxy refers to the arrangement of leaves on the stem or branches of a plant. It is crucial for maximizing sunlight exposure for photosynthesis.

2. **Identify Types of Phyllotaxy**:
- There are several types of phyllotaxy:
- **Alternate Phyllotaxy**: One leaf per node, alternating sides (e.g., China Rose).
- **Opposite Phyllotaxy**: Two leaves per node, directly opposite each other (e.g., Guava).
- **Spiral Phyllotaxy**: More than one leaf per node, arranged in a spiral pattern.
- **Whorled/Verticillate Phyllotaxy**: More than two leaves arise from a single node, forming a whorl (e.g., Alstroemeria).

3. **Analyze the Given Options**:
- We need to evaluate the plants provided in the options to identify which one has whorled phyllotaxy.
- **Cerium**: Exhibits opposite phyllotaxy.
- **Mango**: Exhibits alternate phyllotaxy.
- **Nerium**: Exhibits whorled phyllotaxy (more than two leaves at a single node).
- **Sunflower**: Exhibits alternate phyllotaxy.

4. **Conclusion**:
- Based on the analysis, the plant that exhibits verticillate or whorled phyllotaxy is **Nerium**.

### Final Answer:
**Nerium** is the plant that exhibits verticillate or whorled phyllotaxy.