Lamprey is

Options

A. Catadromous
B. Anadromous
C. Both (1) & (2)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about Lamprey, which is scientifically known as Petromyzon. It belongs to the subphylum Vertebrata and the class Cyclostomata.

2. **Understand Migration Types**: The terms "catadromous" and "anadromous" refer to types of fish migration:
- **Catadromous**: Fish that migrate from freshwater to the sea to spawn (e.g., eels).
- **Anadromous**: Fish that migrate from the sea to freshwater to spawn (e.g., salmon).

3. **Determine Lamprey's Migration Pattern**: Lampreys are known to migrate from the sea to freshwater rivers to spawn, which classifies them as anadromous.

4. **Evaluate the Options**:
- The first option is catadromous, which is incorrect for Lamprey.
- The second option is anadromous, which is correct.
- The third option is both, which is incorrect as Lamprey only exhibits anadromous behavior.
- The fourth option is none of these, which is also incorrect.

5. **Conclusion**: The correct answer is that Lamprey is anadromous.

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