In Calotropis the phyllotaxy is

Options

A. A.alternate
B. B.opposite
C. C.whorled
D. D.none of the above

Answer

### Step-by-Step Solution

1. **Understanding Phyllotaxy**:
- Phyllotaxy refers to the arrangement of leaves on the stem of a plant. It is important to identify the type of phyllotaxy to understand how a plant grows and how it optimizes light capture for photosynthesis.

2. **Identifying the Plant**:
- The plant in question is Calotropis, which belongs to the family Apocynaceae. Knowing the family can help in identifying common characteristics, including phyllotaxy.

3. **Analyzing the Options**:
- The options provided are:
- A) Alternate
- B) Opposite
- C) Whorled
- D) None of the above

4. **Determining the Type of Phyllotaxy in Calotropis**:
- In Calotropis, the leaves are arranged in pairs at each node. Specifically, two leaves arise at each node and are positioned opposite to each other. This arrangement is at right angles to the leaves above and below them.

5. **Defining Opposite Phyllotaxy**:
- The type of phyllotaxy observed in Calotropis is called "opposite decussate phyllotaxy." In this type, pairs of leaves are arranged opposite to each other at each node, and successive pairs are rotated at right angles.

6. **Conclusion**:
- Based on the analysis, the correct answer is option B) Opposite.