In Calotropis the phyllotaxy is

Options

A. Alternate
B. Verticellate
C. Opposite and superposed
D. Opposite and decussate.

Answer

**Step-by-Step Solution:**

1. **Understanding Phyllotaxy**: Phyllotaxy refers to the arrangement of leaves on a stem or branch. It is important to identify the type of phyllotaxy to understand the plant's growth pattern.

2. **Types of Phyllotaxy**: There are three main types of phyllotaxy:
- **Alternate**: One leaf per node, arranged alternately.
- **Opposite**: Two leaves per node. This can be further divided into:
- **Superposed Opposite**: Leaves are stacked directly on top of each other.
- **Decussate**: Leaves are arranged at right angles to each other, resulting in four columns when viewed from above.
- **Whorled**: Multiple leaves grow from a single node, forming a whorl.

3. **Identifying the Type in Calotropis**:
- Calotropis is known to exhibit a specific type of phyllotaxy.
- Upon examination, it is established that Calotropis has two leaves per node, which indicates that it falls under the "opposite" category.
- Furthermore, the leaves in Calotropis are arranged at right angles to each other, confirming that it is also "decussate."

4. **Conclusion**: Based on the characteristics of Calotropis, we conclude that the phyllotaxy of Calotropis is "opposite and decussate."

**Final Answer**: The phyllotaxy in Calotropis is "opposite and decussate."

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