Modified tap roots are found in :-

Options

A. Carrot & potato
B. Turnip & potato
C. Carrot & Turnip
D. Sweet potato & Potato

Answer

### Step-by-Step Solution:

1. **Understanding Modified Tap Roots**:
- Modified tap roots are roots that have undergone changes from their original structure to serve additional functions, primarily for storage of food.

2. **Identifying the Function of Roots**:
- The primary function of roots is to absorb water and minerals from the soil. However, some roots can modify to store nutrients, particularly carbohydrates.

3. **Analyzing the Options**:
- We need to look at the options provided and identify which ones consist of modified tap roots that serve as food storage.

4. **Evaluating Each Option**:
- **Carrots**: Carrots are indeed modified tap roots that store food.
- **Sweet Potatoes**: Sweet potatoes are storage roots but are not classified as tap roots; they are a different type of root modification.
- **Turnips**: Turnips are also modified tap roots that store food.
- **Potatoes**: Potatoes are tubers and not modified tap roots; they are stem modifications.

5. **Conclusion**:
- The correct answer is that modified tap roots are found in **Carrots and Turnips**. Therefore, the answer is option number 3.