Homology is exhibited by :

Options

A. Wings of butterfly, birds and bat
B. Paddel of whale, forearm of horse and forelimbs of man
C. Tail of monkey and bird
D. Sting of scropion and Apis

Answer

To solve the question "Homology is exhibited by:", we need to analyze the provided options and understand the concept of homology in biological terms.

### Step-by-Step Solution:

1. **Understanding Homology**:
- Homology refers to the similarity in structure or function of different organisms that arises from a common ancestor. It is based on common origin, embryonic development, and similar basic body plans.
- It is important to note that homologous structures may not necessarily have the same function or appearance.

2. **Analyzing the Options**:
- **Option 1**: Wings of butterfly, birds, and bats.
- These structures are analogous (similar function but different origin) rather than homologous because they evolved independently to serve the same function (flight).
- **Option 2**: Forelimb of a whale, forearm of a horse, and forelimbs of a man.
- These structures have a common origin and similar embryonic development, even though they serve different functions (swimming, running, and manipulation respectively). This is a classic example of homology.
- **Option 3**: Tail of monkey and bird.
- These structures are not homologous as they do not share a common origin; they have evolved independently.
- **Option 4**: Sting of the scorpion and apes.
- These structures are also not homologous as they do not share a common ancestor and have different origins.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2**: the forelimb of a whale, forearm of a horse, and forelimbs of a man exhibit homology.

### Final Answer:
Homology is exhibited by: **Option 2 - Forelimb of a whale, forearm of a horse, and forelimbs of a man.**

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