Lamprey (Petromyzon) belongs to

Options

A. Chondrichthyes
B. Osteichytes
C. Agnatha
D. Amphibia

Answer

To determine the classification of Lamprey (Petromyzon), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: The organism in question is Lamprey, scientifically known as Petromyzon.

2. **Understand the Classification**: Lampreys are part of the vertebrate family. Vertebrates are classified into various groups based on certain characteristics.

3. **Examine the Options**: The options provided are:
- Chondrichthyes (cartilaginous fishes)
- Osteichthyes (bony fishes)
- Agnatha (jawless vertebrates)
- Amphibia (amphibians)

4. **Define Each Group**:
- **Chondrichthyes**: This class includes cartilaginous fishes like sharks and rays, which have jaws.
- **Osteichthyes**: This class includes bony fishes, which also possess jaws.
- **Agnatha**: This class includes jawless vertebrates, such as lampreys and hagfish.
- **Amphibia**: This class includes animals like frogs and toads that can live both in water and on land.

5. **Determine the Correct Classification**: Since Lampreys are jawless, they do not belong to Chondrichthyes or Osteichthyes. They also do not belong to Amphibia, as they do not have the characteristics of amphibians. Therefore, the correct classification for Lamprey is Agnatha.

6. **Conclusion**: Lamprey (Petromyzon) belongs to the class Agnatha.

### Final Answer:
Lamprey (Petromyzon) belongs to the class **Agnatha**.