Characteristics of dicots include all of the following except :

Options

A. two cotyledons
B. leaves with netted veins
C. woody or herbaceous plants
D. vascular bundles arranged irregularly in the stem

Explanation

To solve the question regarding the characteristics of dicots, we can follow these steps:

### Step 1: Understand what dicots are
Dicots, or dicotyledons, are a group of flowering plants that typically have two cotyledons (seed leaves) in their seeds. This is a key characteristic that distinguishes them from monocots, which have only one cotyledon.

### Step 2: Identify the characteristics of dicots
- **Two cotyledons**: This is a defining feature of dicots.
- **Reticulate venation**: The leaves of dicots usually have a network-like pattern of veins, known as reticulate venation.
- **Woody or herbaceous**: Dicots can be either woody (like trees) or herbaceous (like many flowers and vegetables).
- **Vascular bundles**: In dicots, the vascular bundles (xylem and phloem) are typically arranged in a ring pattern within the stem.

### Step 3: Analyze the options given in the question
1. **Two cotyledons**: This is true for dicots.
2. **Leaves with naked veins**: This is also true; dicots have reticulate venation.
3. **Woody or herbaceous plants**: This is true; dicots can be either.
4. **Vascular bundles arranged irregularly in the stem**: This is false; dicots have vascular bundles arranged in a ring.

### Step 4: Determine the correct answer
The question asks for the characteristic that is NOT true for dicots. Based on our analysis, the statement about vascular bundles being arranged irregularly in the stem is incorrect. Therefore, this is the characteristic that does not belong to dicots.

### Final Answer
The characteristic of dicots that is NOT true is: **Vascular bundles arranged irregularly in the stem.**

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