Identify the wrong pair from the following.

Options

A. Euglena - Binary fission
B. Yeast - Budding
C. Spirogyra - Fragmentation
D. Hydra - Multiple fission

Explanation

To identify the wrong pair from the given options, we will analyze each pair one by one:

1. **Euglena - Binary Fission**:
- Euglena is a unicellular organism that reproduces asexually through binary fission. In this process, the organism divides into two equal halves.
- **Conclusion**: This pair is correct.

2. **Yeast - Budding**:
- Yeast is known to reproduce asexually through a process called budding. In budding, a new organism develops from an outgrowth (bud) on the parent organism and eventually detaches to become independent.
- **Conclusion**: This pair is also correct.

3. **Spirogyra - Fragmentation**:
- Spirogyra is a filamentous green algae that reproduces asexually through fragmentation. In this process, the filament breaks into smaller pieces, and each piece can grow into a new organism.
- **Conclusion**: This pair is correct.

4. **Hydra - Multiple Fission**:
- Hydra is a freshwater organism that primarily reproduces asexually through budding, not multiple fission. Multiple fission is a process where the organism divides into many parts simultaneously, which is not characteristic of Hydra.
- **Conclusion**: This pair is incorrect.

### Final Answer:
The wrong pair is **Hydra - Multiple Fission**.