Why cannot multicellular complex organism show power of regeneration?

Explanation

### Step-by-Step Solution:

1. **Understanding Regeneration**:
- Regeneration is the process through which an organism can regrow lost or damaged body parts. In simple organisms, such as Hydra or Planaria, regeneration allows them to form a complete new organism from a part of their body.

2. **Examples of Regeneration**:
- For instance, if a Planaria is cut into three pieces, each piece can regenerate into a complete Planaria. This ability to regenerate is common in simpler organisms.

...