Explain the structure of the organ responsible for sperm formation.

Explanation

### Step-by-Step Text Solution

1. **Identify the Organ**: The organ responsible for sperm formation in males is the testes, which are also known as male gonads.

2. **Functions of the Testes**: The testes have two primary functions:
- **Production of Sex Hormones**: They produce hormones such as testosterone, which are crucial for male reproductive development and function.
- **Formation of Gametes**: The testes are responsible for producing sperm, which are the male gametes.

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