Identify the incorrect statement regarding onion

Options

A. Stem is reduced to disc like structure
B. Bulb is surround by tunic
C. Scape is present
D. Stem helps in storage of food

Answer

To identify the incorrect statement regarding onion, we will analyze the provided statements one by one based on the information about the morphology of the onion plant.

### Step-by-Step Solution:

1. **Understanding the Structure of Onion**:
- The onion (Allium cepa) is a bulb, which is a modified underground stem.
- The bulb is made up of overlapping fleshy leaves that store food.

2. **Analyzing the Statements**:
- **Statement A**: "Stem is reduced in a disc-like structure."
- This statement is correct. The bulb of the onion is indeed a disc-like structure formed by the modification of the stem.

- **Statement B**: "Its bulb is surrounded by a tunic."
- This statement is also correct. The outer skin of the onion, known as the tunic, surrounds the bulb.

- **Statement C**: "Scape is present in it."
- This statement is correct as well. The scape is a condensed internode that supports the bulb and is characteristic of the onion plant.

- **Statement D**: "Stem helps in food storage."
- This statement is incorrect. While the bulb is a modified stem, the actual food storage occurs in the fleshy leaves of the bulb, not in the stem itself. The statement implies that the stem is responsible for food storage, which is misleading.

3. **Conclusion**:
- The incorrect statement regarding onion is **Statement D**: "Stem helps in food storage."