Homologous organs are

Options

A. Wings of pigeon and Butterfly
B. Wings of Pigeon and Housefly
C. Wings of Bat and arms of Humans
D. Wings of Bat, Housefly and Butterfly

Answer

### Step-by-Step Solution:

1. **Understanding the Definition**:
- Homologous organs are defined as organs that have a common evolutionary origin. They arise from the same ancestral structure but may serve different functions in the organisms that possess them.

2. **Identifying Characteristics**:
- Homologous organs share the same basic structural plan and developmental pathway. Despite their different functions, their anatomical similarities indicate a common ancestry.

3. **Examples of Homologous Organs**:
- A classic example of homologous organs includes the forelimbs of mammals. For instance, the forelimb of a human (arm), a whale (flipper), and a bat (wing) all have similar bone structures (humerus, radius, ulna, etc.) but are adapted for different functions (grasping, swimming, and flying, respectively).

4. **Contrasting with Analogous Organs**:
- It is important to contrast homologous organs with analogous organs, which do not share a common ancestry but perform similar functions. For example, the wings of a butterfly and a bird are analogous; they serve the same function (flying) but have different evolutionary origins.

5. **Conclusion**:
- Based on the definitions and examples, homologous organs are those that arise from a common ancestor and have similar structures, even if they perform different functions.

### Final Answer:
Homologous organs are those that have a common evolutionary origin and similar structural features, despite potentially serving different functions.

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