Select the incorrect statement from the following about the anatomy of angiosperms.

Options

A. The cells of medullary rays , adjoining the intrafascicular cambium becomes meristematic and forms interfascicular cambium.
B. In isobilateral leaf, the mesophyll is undifferentiated into palisade and spongy parenchyma.
C. Vascular bundles in a dicot stem are arranged in a scattered manner.
D. Bulliform cells are observed in the levels of some monocots

Answer

To solve the question of selecting the incorrect statement about the anatomy of angiosperms, we will analyze each statement provided.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "The cells of medullary rays adjoining the intrafascicular cambium become meristematic and form interfascicular cambium."
- **Analysis**: This statement is correct. The intrafascicular cambium is located between the xylem and phloem, and the medullary rays can indeed become meristematic to form interfascicular cambium.

2. **Statement 2**: "In isobilateral leaf, the mesophyll is undifferentiated into palisade and spongy parenchyma."
- **Analysis**: This statement is also correct. In isobilateral leaves, the mesophyll does not differentiate into palisade and spongy parenchyma because stomata are present on both surfaces, allowing for gas exchange.

3. **Statement 3**: "Vascular bundles in dicot stem are arranged in a scattered manner."
- **Analysis**: This statement is incorrect. In dicot stems, vascular bundles are arranged in a ring-like or systematic manner, not scattered. This arrangement allows for efficient transport and structural support.

4. **Statement 4**: "Bulliform cells are observed in the leaf of some monocots."
- **Analysis**: This statement is correct. Bulliform cells are specialized cells that help in water storage and are commonly found in the leaves of monocots, such as grasses.

5. **Conclusion**: Based on the analysis, the incorrect statement is Statement 3: "Vascular bundles in dicot stem are arranged in a scattered manner."

### Final Answer:
The incorrect statement is: **"Vascular bundles in dicot stem are arranged in a scattered manner."**

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