In which of the following type of underground modification of stem, storage of food does not occur in stem ?

Options

A. Bulb
B. Rhizome
C. Corn
D. Tuber

Answer

To solve the question regarding the type of underground modification of stem in which food storage does not occur in the stem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a type of underground stem modification where the stem itself does not store food.

2. **Identify the Options**: The options provided typically include various types of underground stem modifications such as bulbs, rhizomes, corms, and tubers.

3. **Analyze Each Option**:
- **Bulb**: A bulb is a modified stem where food is stored in the fleshy leaves (e.g., onion and garlic). Therefore, in bulbs, the stem does not store food.
- **Rhizome**: A rhizome is a modified stem that stores food (e.g., ginger and banana).
- **Corm**: A corm is also a modified stem that stores food (e.g., colocasia).
- **Tuber**: A tuber is a swollen part of a stem that stores food (e.g., potato).

4. **Determine the Correct Answer**: Since the bulb is the only option where food storage occurs in the fleshy leaves and not in the stem itself, it is the correct answer.

5. **Conclude**: The answer to the question is that in the case of a bulb, food storage does not occur in the stem.

### Final Answer:
The correct answer is **Bulb**.