Sweet potato is an example of ................... tuberous root.

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Root**: The question asks about the type of tuberous root that sweet potato represents. Sweet potatoes are known for their unique root structure.

2. **Understand Tuberous Roots**: Tuberous roots are modified roots that store nutrients. They can be classified into different types based on their origin and function.

3. **Classify Sweet Potato**: Sweet potatoes are classified as "adventitious roots." These roots do not develop from the primary root but instead arise from other parts of the plant, such as stems.

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