Bulb is modified

Options

A. Leaf
B. Shoot
C. Root
D. Flower

Answer

To determine what a bulb is modified from, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Bulbs**: A bulb is a type of underground storage organ in plants that is used for storing nutrients and energy. It is typically composed of a short stem surrounded by fleshy leaves.

2. **Identifying the Plant Structure**: Bulbs are primarily made up of a modified shoot. They consist of a central stem (the bulb itself) that is surrounded by layers of fleshy leaves (the scales of the bulb) which store food.

3. **Considering the Options**: The question provides four options:
- 1st: Leaf
- 2nd: Shoot
- 3rd: Root
- 4th: Flower

4. **Analyzing Each Option**:
- **Leaf**: While bulbs have fleshy leaves, they are not modified leaves themselves.
- **Shoot**: Bulbs are indeed modified shoots, as they consist of a stem that has adapted to store food.
- **Root**: Bulbs are not modified roots; they are above-ground structures that store nutrients.
- **Flower**: Bulbs can produce flowers, but they are not modified flowers.

5. **Conclusion**: Based on the analysis, the correct answer is that bulbs are modified shoots.

### Final Answer:
Bulb is modified from **shoot** (Option 2).

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