Which one is partially submerged and fixed in mud

Options

A. Marsilea
B. Cyperus
C. Eichhornia
D. Typha.

Answer

To determine which organism is partially submerged and fixed in mud, we need to analyze the characteristics of the given options.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify a plant that is partially submerged in water and fixed in mud. This means the roots of the plant are in the mud while the upper parts (leaves and flowers) are above the water surface.

2. **Identify the Types of Plants**: The plants that are typically found in shallow water, with their roots below the surface and foliage above the water, are known as emergent plants.

3. **Analyze the Options**:
- **Marsilea**: This plant has leaves that can be either above or below the water surface. Therefore, it is not fixed in mud and does not fit the description.
- **Cyprus**: While it thrives in wet and boggy conditions, it is not specifically described as being partially submerged and fixed in mud.
- **Icornia**: This plant has buoyant bulb-like nodules that allow it to float, meaning its base is above the water surface. Thus, it does not meet the criteria.
- **Thaipa**: This plant is specifically mentioned as being partially submerged and fixed in mud. It fits the description perfectly.

4. **Conclusion**: Based on the analysis, the correct answer is **Thaipa**, as it is the only option that is partially submerged and fixed in mud.

### Final Answer:
The organism that is partially submerged and fixed in mud is **Thaipa**.

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