Which is not a root

Options

A. Carrot
B. Turnip
C. Potato
D. Radish

Answer

To determine which option is not a root, we will analyze each of the given options: carrot, turnip, potato, and radish.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are carrot, turnip, potato, and radish.

2. **Understand Root Modifications**: Roots can be modified for various functions, such as storage, respiration, and vegetative propagation. Common examples of modified roots include storage roots.

3. **Analyze Each Option**:
- **Carrot**: This is a modified taproot that serves primarily as a storage organ for nutrients. Therefore, carrot is a root.
- **Turnip**: This is also a modified root, specifically a storage root, which stores nutrients. Hence, turnip is a root.
- **Radish**: Similar to carrot and turnip, radish is a modified root that serves as a storage organ. Thus, radish is a root.
- **Potato**: Unlike the others, potato is a starchy tuber that is a modification of the stem, not the root. It serves as a storage organ but is classified as a stem modification.

4. **Conclusion**: Based on the analysis, the only option that is not a root is **potato**.

### Final Answer:
**Potato is not a root.**

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