Select the incorrect match with respect to the plant and the relative plants part modified for food storage.

Options

A. Lathyrus odoratus (Sweet potato) - Root
B. Solanum tuberosum (Potato) - Stem
C. Allium cepa (Onion) - Leaves
D. Dahlia (Dahlia) - Leaves

Explanation

To solve the question regarding the incorrect match of plants and their modified parts for food storage, we will analyze each pairing provided in the question.

### Step-by-Step Solution:

1. **Identify the first pairing:**
- **Plant:** Lactarus odratus (Sweet Potato)
- **Modified Part:** Root
- **Analysis:** Sweet potato is known for its enlarged lateral roots that serve as storage organs. This pairing is correct.

2. **Identify the second pairing:**
- **Plant:** Solanum tuberosa (Potato)
- **Modified Part:** Stem
- **Analysis:** The potato is characterized by its tuber, which is an underground stem that stores food. This pairing is also correct.

3. **Identify the third pairing:**
- **Plant:** Allium cepa (Onion)
- **Modified Part:** Leaves
- **Analysis:** Onions have fleshy, modified leaves that store food. This pairing is correct as well.

4. **Identify the fourth pairing:**
- **Plant:** Dahlia
- **Modified Part:** Leaves
- **Analysis:** Dahlia actually has modified adventitious roots that are fleshy and serve as storage organs. The statement that leaves are the modified part for food storage is incorrect. Therefore, this pairing is incorrect.

### Conclusion:
The incorrect match is **Dahlia and leaves**. The correct pairing should be Dahlia with its modified roots for food storage.

### Final Answer:
The incorrect match is **Dahlia and leaves**.

---