The petiole modified into leaf like structure is known as

Options

A. Phylloclade
B. Phyllode
C. Cladode
D. Cladophyll

Answer

To solve the question "The petiole modified into leaf-like structure is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**: Begin by defining the key terms in the question. The petiole is the stalk that attaches the leaf blade to the stem.

2. **Identify the Options**: The options given are:
- Phylloclade
- Phyllode
- Cladode
- Cladophyll

3. **Analyze Each Option**:
- **Phylloclade**: This is a modified stem that is flattened or cylindrical and capable of unlimited growth. It is not related to the petiole.
- **Cladophyll**: Similar to phylloclade, this is also a modified stem, but it has limited growth. Again, it does not pertain to the petiole.
- **Cladode**: This refers to a modified stem where the leaves do not develop, and the stem assumes photosynthetic functions. This is also not related to the petiole.
- **Phyllode**: This is a modified petiole that appears leaf-like. In some plants, the petiole becomes flattened and widened, taking over the function of photosynthesis when the leaf itself is reduced or absent.

4. **Conclusion**: Based on the analysis, the correct answer is **Phyllode**, as it specifically refers to a modified petiole that resembles a leaf in structure and function.

### Final Answer:
The petiole modified into a leaf-like structure is known as **Phyllode**.

---