Variety of beaks of finches that Darwin found in Galapagos islands, is an example of

Options

A. Adaptive radiation
B. Convergent evolution
C. Adaptive convergence
D. Analogous organs.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the variety of beaks of finches that Darwin found in the Galapagos Islands. We need to identify the evolutionary concept that best describes this phenomenon.

2. **Identifying the Finches**: The finches that Darwin studied are known as the Galapagos finches or Darwin's finches. These birds are known for their diverse beak shapes and sizes.

3. **Common Ancestor**: All these finches share a common ancestor. This is an important point because it indicates that they evolved from a single species.

4. **Adaptive Radiation**: The different beak shapes of the finches are adaptations to their specific feeding habits. This process, where a single ancestral species evolves into a variety of forms to adapt to different environments or niches, is known as adaptive radiation.

5. **Divergent Evolution**: Adaptive radiation is a form of divergent evolution, where organisms that share a common ancestor evolve different traits to adapt to various environments.

6. **Eliminating Incorrect Options**:
- **Convergent Evolution**: This refers to different species evolving similar traits independently, which does not apply here.
- **Adaptive Convergence**: This term is not commonly used in evolutionary biology and is not applicable in this context.
- **Analogous Organs**: These are structures that serve similar functions but have different evolutionary origins, which is not the case with the finches.

7. **Conclusion**: The variety of beaks of the finches that Darwin found in the Galapagos Islands is an example of **adaptive radiation**.

**Final Answer**: Adaptive Radiation

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