Which of the following is a "lizard- bird":-

Options

A. Archaeopteryx
B. Struthio
C. Aptenodytes
D. Humming bird

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Lizard-Bird":** The term "lizard-bird" refers to a creature that exhibits characteristics of both reptiles (like lizards) and birds. This term is often used to describe a transitional fossil that shows features of both groups.

2. **Analyzing the Options:**
- **A. Archaeopteryx:** This is a well-known fossil that displays both avian (bird-like) and reptilian (lizard-like) characteristics. It had wings and feathers, similar to birds, but also had teeth and a long tail, which are features associated with reptiles.
- **B. Struthio:** This is the scientific name for the ostrich, a modern bird that does not exhibit reptilian features.
- **C. Ectenodytes:** This is a genus of birds that do not have the transitional features that would classify them as a "lizard-bird."
- **D. Hummingbird:** This is a modern bird known for its small size and ability to hover, but it does not exhibit reptilian characteristics.

3. **Identifying the Correct Answer:** Based on the analysis, Archaeopteryx is the only option that fits the description of a "lizard-bird" due to its unique combination of features from both reptiles and birds.

4. **Conclusion:** The correct answer to the question "Which of the following is a 'lizard-bird'?" is **A. Archaeopteryx**.

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