Roots are absent in

Options

A. Walffia
B. Utricularia
C. Nymphaea
D. Both A and B.

Answer

To determine where roots are absent, we need to analyze the given options one by one.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks in which of the following options roots are absent. We have four options to consider: Pallepia, Utricularia, Nymphaea, and both A and B.

2. **Analyzing the First Option (Pallepia)**:
- Pallepia is described as a free-floating salve (algae) that does not have roots. Since it is a free-floating organism, it does not require roots for anchorage or nutrient absorption like terrestrial plants do.
- **Conclusion**: Roots are absent in Pallepia.

3. **Analyzing the Second Option (Utricularia)**:
- Utricularia is a carnivorous plant that is also not clearly divided into root, stem, and leaves. It has specialized structures called utricles that trap prey, but it does not have true roots.
- **Conclusion**: Roots are absent in Utricularia.

4. **Analyzing the Third Option (Nymphaea)**:
- Nymphaea, commonly known as water lily, is an aquatic plant that does have roots. It has a well-developed root system that anchors it to the substrate in water.
- **Conclusion**: Roots are present in Nymphaea.

5. **Final Conclusion**:
- Since roots are absent in both Pallepia and Utricularia, the correct answer is both A and B.

### Answer:
Roots are absent in both A (Pallepia) and B (Utricularia).

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