Long neck of Girraffe or camel due to `:-`

Options

A. More number of cervical vertebra
B. More length of cervical vertebra
C. Presence of pads between cervical vertebra
D. Presence of extra bony plates

Answer

To solve the question regarding the long neck of giraffes or camels, we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Anatomy of Giraffes and Camels**:
- Both giraffes and camels have long necks, which is a distinctive feature of these animals.

2. **Analyzing the Options**:
- **Option A: More number of cervical vertebrae**:
- All mammals, including giraffes and camels, have 7 cervical vertebrae. Therefore, this option is incorrect.

- **Option B: More length of cervical vertebrae**:
- While the number of cervical vertebrae is the same, the cervical vertebrae in giraffes are significantly longer than those in most other mammals. This is a plausible reason for their long necks.

- **Option C: Presence of pads between cervical vertebra**:
- While intervertebral discs (pads) do exist between vertebrae, they do not contribute to the length of the neck. This option does not explain the long neck directly.

- **Option D: Presence of extra bony kids**:
- There is no anatomical feature known as "extra bony kids" that would contribute to the length of the neck in these animals. This option is incorrect.

3. **Conclusion**:
- After analyzing all the options, the correct answer is **Option B: More length of cervical vertebrae**. The long necks of giraffes and camels are primarily due to the increased length of their cervical vertebrae, not the number of them.

### Final Answer:
The long neck of giraffes or camels is due to **more length of cervical vertebrae**.

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