The modified stem of opuntia is

Options

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

Answer

To solve the question "The modified stem of Opuntia is:", we will analyze the options provided and determine which one correctly identifies the modified stem of the Opuntia plant.

### Step-by-Step Solution:

1. **Understanding Opuntia**:
- Opuntia is a genus of cacti commonly known as prickly pear. In cacti, the stem is often modified to adapt to arid environments.

2. **Evaluating the Options**:
- **Option 1: Phyllot**:
- Phyllot is not a term used to describe modified stems. It refers to the arrangement of leaves on a stem. Hence, this option is incorrect.

- **Option 2: Phylloclade**:
- Phylloclade is a term that refers to a flattened, leaf-like stem that performs photosynthesis. This is characteristic of Opuntia, where the stem takes on a leaf-like appearance. Therefore, this option is correct.

- **Option 3: Cladode**:
- Cladode refers to a stem that is modified to resemble a leaf and is capable of photosynthesis. However, this term is often used interchangeably with phylloclade, but it is not the specific term used for Opuntia. Thus, this option is not the best choice.

- **Option 4: Staminote**:
- Staminote refers to a sterile stamen that does not produce pollen. This is unrelated to the modification of stems, making this option incorrect.

3. **Conclusion**:
- The correct answer is **Option 2: Phylloclade**. This term specifically describes the modified stem of Opuntia that functions in photosynthesis.

### Final Answer:
The modified stem of Opuntia is **Phylloclade**.