The skull of birds is

Options

A. monocondylic
B. dicondylic
C. amphicondylic
D. none of these

Answer

To answer the question "The skull of birds is?", we will analyze the characteristics of the bird skull and the options provided.

### Step-by-Step Solution:

1. **Understanding Skull Types**:
- The skull can be classified based on the number of occipital condyles present. Occipital condyles are the rounded ends of the skull that articulate with the vertebral column.

2. **Identifying Bird Skull Characteristics**:
- Birds have a specific type of skull known as monocondylic. This means they possess a single occipital condyle.

3. **Function of Monocondylic Skull**:
- The presence of a single occipital condyle allows birds to have a greater range of motion in their neck. Birds can rotate their heads up to 270 degrees due to this structure.

4. **Evaluating Other Options**:
- The other options provided are dicondylic and amphicondylic.
- Dicondylic skulls are found in mammals and amphibians, which have two occipital condyles.
- Amphicondylic is not a recognized term in this context, as there are only monocondylic and dicondylic skulls.

5. **Conclusion**:
- Based on the analysis, the correct answer is that the skull of birds is monocondylic.

### Final Answer:
The skull of birds is monocondylic.

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