Modification of petiole into leaf-like structure is called

Options

A. cladode
B. phylloclade
C. phyllode
D. pistillode

Answer

To solve the question regarding the modification of petiole into a leaf-like structure, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- First, we need to understand what a petiole is. The petiole is the stalk that attaches the leaf blade to the stem of the plant.

2. **Identify the Modification**:
- The question asks about the modification of the petiole into a leaf-like structure. This means we are looking for a term that describes this specific change.

3. **Consider the Options**:
- We have four options to consider:
- Option 1: Cladode
- Option 2: Phyloclade
- Option 3: Phyllode
- Option 4: Pistilode

4. **Analyze Each Option**:
- **Cladode**: This refers to a stem that is modified to resemble a leaf. This is not correct for our question.
- **Phyloclade**: This refers to a branch that is modified to take on the appearance of a leaf. This is also not correct for our question.
- **Phyllode**: This term refers to a petiole that is flattened and takes on the function of a leaf. This fits our question perfectly.
- **Pistilode**: This refers to a sterile pistil found in male flowers, which is unrelated to our question.

5. **Conclusion**:
- Based on the analysis, the correct answer is **Phyllode**, as it specifically describes the modification of the petiole into a leaf-like structure.

### Final Answer:
The modification of petiole into a leaf-like structure is called **Phyllode**.