### Analyzing the Options

1. **Flatworms**: These belong to the phylum Platyhelminthes, which is distinct from Nematoda.

2. **Earthworms**: Typically classified under the phylum Annelida, specifically within the class Oligochaeta, and not related to Nematoda.

3. **Polychaetes**: These are also segmented worms but fall under the category of Annelida, not Nematoda.

4. **Roundworms**: This is the correct classification for nematodes, as they are commonly referred to as roundworms due to their cylindrical shape.

### Final Answer
Nematodes in the phylum Nematoda are **roundworms**.

Question

### Analyzing the Options

1. **Flatworms**: These belong to the phylum Platyhelminthes, which is distinct from Nematoda.
   
2. **Earthworms**: Typically classified under the phylum Annelida, specifically within the class Oligochaeta, and not related to Nematoda.

3. **Polychaetes**: These are also segmented worms but fall under the category of Annelida, not Nematoda.

4. **Roundworms**: This is the correct classification for nematodes, as they are commonly referred to as roundworms due to their cylindrical shape.

### Final Answer
Nematodes in the phylum Nematoda are **roundworms**.

Knowee AI · Accepted Answer

### Analyzing the Options

1. **Flatworms**: These belong to the phylum Platyhelminthes, which is distinct from Nematoda.
   
2. **Earthworms**: Typically classified under the phylum Annelida, specifically within the class Oligochaeta, and not related to Nematoda.

3. **Polychaetes**: These are also segmented worms but fall under the category of Annelida, not Nematoda.

4. **Roundworms**: This is the correct classification for nematodes, as they are commonly referred to as roundworms due to their cylindrical shape.

### Final Answer
Nematodes in the phylum Nematoda are **roundworms**.

Nematodes in the phylum Nematoda areMultiple choice question.flatworms.earthworms.polychaetes.roundworms.

Question

Nematodes in the phylum Nematoda are

Solution

Analyzing the Options

Final Answer

Similar Questions

Upgrade your grade with Knowee