Nicotine is synthesized in:

Options

A. Roots
B. Leaves
C. Flowers
D. Fruits

Answer

To answer the question "Nicotine is synthesized in:", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Substance**: We need to determine where nicotine, a specific compound, is synthesized.

2. **Understand the Source**: Nicotine is primarily associated with tobacco plants.

3. **Locate the Synthesis Site**: Research indicates that nicotine is synthesized in the roots of the tobacco plant.

4. **Function of Nicotine**: The tobacco plant produces nicotine as a defense mechanism against insects, which helps protect the plant.

5. **Transport Mechanism**: Once synthesized in the roots, nicotine is transported to other parts of the plant through the xylem, which is responsible for transporting water and nutrients.

6. **Final Conclusion**: Therefore, nicotine is synthesized in the roots of the tobacco plant.

### Final Answer:
Nicotine is synthesized in the roots of the tobacco plant.

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