Reproduction by budding takes place in

Options

A. hydra
B. amoeba
C. paramecium
D. bacteria

Answer

### Step-by-Step Solution:

1. **Understanding Budding**: Budding is a form of asexual reproduction where a new individual develops from a small part of the parent organism. This small part is known as a "bud."

2. **Identifying the Organisms**: The question asks in which organisms reproduction by budding occurs. We need to analyze the options provided.

3. **Analyzing Each Option**:
- **Option 1: Hydra**: Hydra is known to reproduce by budding. A small bud forms on the parent hydra, grows, and eventually detaches to become a new individual. This option is correct.
- **Option 2: Amoeba**: Amoeba reproduces by binary fission, not by budding. Therefore, this option is incorrect.
- **Option 3: Paramecium**: Similar to amoeba, Paramecium also reproduces by binary fission. Thus, this option is also incorrect.
- **Option 4: Bacteria**: Bacteria reproduce by binary fission as well. Hence, this option is incorrect too.

4. **Conclusion**: Based on the analysis, the only organism that reproduces by budding is Hydra. Therefore, the correct answer is **Option 1: Hydra**.