Which of the following cannot be conidered as avian character of Archaeopteryx?

Options

A. Presence of feathers on body
B. Forelimbs modified into wings
C. Modification of jaws into break
D. Presence of teeth in beak

Answer

To solve the question "Which of the following cannot be considered as an avian character of Archaeopteryx?", we will analyze the characteristics of Archaeopteryx and identify which of the given options does not represent a bird-like feature.

### Step-by-Step Solution:

1. **Understand Archaeopteryx**:
- Archaeopteryx is a significant fossil that exhibits both avian (bird-like) and reptilian (reptile-like) characteristics. It serves as a transitional form between birds and reptiles.

2. **Identify Avian Characteristics**:
- Common avian characteristics include:
- Presence of feathers.
- Forelimbs modified into wings.
- Modification of jaws into a beak.

3. **Identify Reptilian Characteristics**:
- Reptilian characteristics may include:
- Presence of teeth.
- Certain bone structures similar to reptiles.

4. **Evaluate the Options**:
- Let's analyze the options provided:
- **Option 1**: Presence of feathers on the body - This is an avian character.
- **Option 2**: Four limbs modified into wings - This is also an avian character.
- **Option 3**: Modification of jaws into a beak - This is an avian character as well.
- **Option 4**: Presence of teeth in the beak - This is NOT an avian character, as modern birds do not have teeth.

5. **Conclusion**:
- The characteristic that cannot be considered as an avian character of Archaeopteryx is the presence of teeth in the beak. Thus, the correct answer is **Option 4**.

### Final Answer:
The characteristic that cannot be considered as an avian character of Archaeopteryx is the **presence of teeth in the beak** (Option 4).

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