Earthworm is

Options

A. Nocturnal
B. Diurnal
C. Aquatic
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify the nature of the earthworm from the given options: nocturnal, diurnal, aquatic, or all of the above.

2. **Defining Terms**:
- **Nocturnal**: Organisms that are active during the night.
- **Diurnal**: Organisms that are active during the day.
- **Aquatic**: Organisms that live in water.

3. **Analyzing Earthworm Behavior**:
- Earthworms are primarily active during the night, which means they are nocturnal. They come out to the surface to feed and move around at night.
- During the daytime, earthworms typically stay in their burrows to avoid predators and conserve moisture.

4. **Evaluating the Options**:
- **Nocturnal**: Correct, as earthworms are active at night.
- **Diurnal**: Incorrect, as earthworms are not active during the day.
- **Aquatic**: Incorrect, as earthworms are terrestrial organisms, meaning they live on land, not in water.
- **All of the above**: Incorrect, since only the nocturnal option is true.

5. **Conclusion**: Based on the analysis, the correct answer is that earthworms are nocturnal.

**Final Answer**: Earthworm is nocturnal.

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