Repetitive regeneration is found in
(a) Tadpole
(b) Molluscs
(c) Hydra
(d) Human beings

Options

A. Tadpole
B. Molluscs
C. Hydra
D. Human beings

Answer

To solve the question "Repetitive regeneration is found in", we need to analyze each of the given options and determine which organism exhibits this characteristic.

### Step-by-Step Solution:

1. **Understanding Repetitive Regeneration**:
- Repetitive regeneration refers to the ability of an organism to regenerate lost parts multiple times. This involves processes of renewal, restoration, and growth.

2. **Analyzing Each Option**:
- **(a) Tadpole**: Tadpoles undergo metamorphosis and can regenerate certain parts, but they do not exhibit repetitive regeneration as seen in other organisms.
- **(b) Molluscs**: Molluscs have some regenerative abilities, but they do not show repetitive regeneration like some other organisms.
- **(c) Hydra**: Hydra is known for its remarkable regenerative capabilities. It can regenerate its body parts repeatedly, including both foot and head regeneration. This is a classic example of repetitive regeneration.
- **(d) Human beings**: Humans have limited regenerative abilities. While they can heal wounds and regenerate some tissues, they do not exhibit repetitive regeneration.

3. **Conclusion**:
- Based on the analysis, the organism that exhibits repetitive regeneration is **Hydra**. Therefore, the correct answer is **(c) Hydra**.

### Final Answer:
(c) Hydra