All the following statements are correct about homologous organs, except

Options

A. Homologous organs share common origin
B. Homologous organs perform same functions
C. Homologous organs show divergent evolution
D. Members having homologous organs share common ancestors.

Answer

To solve the question regarding homologous organs, we need to evaluate the statements provided and identify which one is incorrect. Here’s a step-by-step breakdown:

1. **Understanding Homologous Organs**:
- Homologous organs are those that share a common origin but may serve different functions in different species. For example, the forelimbs of humans and the wings of bats are homologous; they have a similar structure but serve different purposes.

**Hint**: Remember that homologous organs arise from a common ancestor.

2. **Analyzing the Statements**:
- **Statement 1**: "Homologous organs share common origin."
- This statement is correct. Homologous organs do indeed share a common evolutionary origin.

**Hint**: Think about the evolutionary tree and how different species can have similar structures due to a shared ancestor.

- **Statement 2**: "Homologous organs perform same functions."
- This statement is incorrect. Homologous organs do not perform the same functions; they can perform different functions despite having a similar structure.

**Hint**: Consider the difference between homologous and analogous organs; analogous organs perform similar functions but do not share a common origin.

- **Statement 3**: "Homologous organs show divergent evolution."
- This statement is correct. Homologous organs are a result of divergent evolution, where species evolve different traits from a common ancestor.

**Hint**: Divergent evolution leads to variations in species that share a common lineage.

- **Statement 4**: "Members having homologous organs share the common ancestor."
- This statement is correct. Members of different species with homologous organs do share a common ancestor.

**Hint**: Reflect on how common ancestry is a key concept in evolutionary biology.

3. **Conclusion**:
- The only incorrect statement among the options is **Statement 2**: "Homologous organs perform same functions."

**Final Answer**: The statement that is incorrect about homologous organs is: "Homologous organs perform same functions."