Which of the following is an incorrect pair ?

Options

A. Phylloclades -Opuntia
B. Cladode- Ruscus
C. Phyllode - Asparagus
D. Stem tendrils = Grapevine

Explanation

To determine which of the following pairs is incorrect, we need to analyze each option based on the definitions and examples of the modified stems provided in the question.

### Step-by-Step Solution:

1. **Understanding Phylloclades**:
- Phylloclades are modified stems that are flat or cylindrical in shape.
- They are capable of unlimited growth and are green in color, allowing them to perform photosynthesis.
- **Example**: Opuntia (a type of cactus) and Euphorbia.

2. **Understanding Cladodes**:
- Cladodes (or cladophylls) are also modified stems but have limited growth.
- They are green, capable of photosynthesis, and bear auxiliary buds.
- **Example**: Ruscus and Asparagus.

3. **Understanding Stem Tendrils**:
- Stem tendrils are thread-like structures that can coil around supports.
- Branched stem tendrils can bear scale leaves at the points where they fork.
- **Example**: Grapevine.

4. **Analyzing the Options**:
- **Option 1**: Phylloclades - Opuntia: This is a correct pair.
- **Option 2**: Cladode - Ruscus: This is also a correct pair.
- **Option 3**: Phyllode - Asparagus: This is an incorrect pair because Asparagus is actually a cladode, not a phyllode.
- **Option 4**: Stem Tendrils - Grapevine: This is a correct pair.

5. **Conclusion**:
- The incorrect pair among the options given is **Option 3: Phyllode - Asparagus**.

### Final Answer:
The incorrect pair is **Phyllode - Asparagus**.