Name the cells which help Hydra to reproduce. How does a bud develop in Hydra ?

Explanation

### Step-by-Step Text Solution

1. **Identify the Cells Involved in Reproduction**:
- The cells that help Hydra to reproduce are called **regenerative cells**. These cells are responsible for the process of asexual reproduction in Hydra.

2. **Understanding the Process of Bud Development**:
- Budding in Hydra occurs through **repeated cell division** at a specific location on the body of the Hydra. This area experiences rapid multiplication of interstitial cells, which leads to the formation of a bud.

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