Define homologous organs.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Homologous Organs**: Homologous organs are defined as structures in different species that share a similar anatomical structure and embryonic origin but serve different functions.

2. **Characteristics of Homologous Organs**:
- **Similar Structure**: These organs have a similar arrangement of bones or tissues.
- **Similar Embryonic Origin**: They develop from the same type of embryonic tissue during the early stages of development.
- **Different Functions**: Despite their structural similarities, these organs perform different functions in the organisms.
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