Dry cell is a `…………………` cell and lead storage cell is a `…………………….` cell.

Explanation

To solve the question regarding the types of cells, we need to understand the definitions and characteristics of dry cells and lead storage cells.

### Step-by-Step Solution:

1. **Identify the Type of Dry Cell**:
- A dry cell is a type of electrochemical cell that is designed to be used once and cannot be recharged.
- It operates on a chemical reaction that is not reversible, meaning once the reactants are used up, the cell cannot be restored to its original state.
- Therefore, a dry cell is classified as a **primary cell**.

2. **Identify the Type of Lead Storage Cell**:
- A lead storage cell, also known as a lead-acid battery, is designed to be rechargeable.
- It can undergo reversible chemical reactions, allowing it to be recharged multiple times by applying an external electric current.
- Hence, a lead storage cell is classified as a **secondary cell**.

3. **Final Answer**:
- Dry cell is a **primary** cell and lead storage cell is a **secondary** cell.