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 beak
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 each option provided and determine whether it is characteristic of birds (avian) or reptiles.

### Step-by-Step Solution:

1. **Understand Archaeopteryx**:
- Archaeopteryx is a significant fossil that serves as a transitional form between reptiles and birds, indicating that birds evolved from reptilian ancestors.

2. **Examine the Options**:
- **Option A: Presence of feathers on body**:
- Feathers are a defining characteristic of birds. Therefore, this is an avian character.
- **Option B: Forelimbs modified into wings**:
- The modification of forelimbs into wings is another key feature of birds. Thus, this is also an avian character.
- **Option C: Modification of jaws into beak**:
- Birds typically have beaks instead of teeth, which is an avian characteristic. Hence, this is also an avian character.
- **Option D: Presence of teeth in beak**:
- The presence of teeth is not a characteristic of modern birds. Instead, it is a feature associated with reptiles. Therefore, this cannot be considered an avian character.

3. **Conclusion**:
- After analyzing all options, we can conclude that the presence of teeth in the beak (Option D) is not an avian character of Archaeopteryx.

### Final Answer:
- The correct answer is **Option D: Presence of teeth in beak**.