What is an elephant's tusk?

Options

A. A modified incisor
B. An enlarged canine
C. An inverted horn
D. A modified premolar

Answer

**Step-by-Step Solution:**

1. **Definition of Tusks**: Tusks are elongated, continuously growing front teeth that protrude well beyond the mouth of certain mammal species.

2. **Type of Teeth**: In elephants, tusks are specifically modified incisors. This distinguishes them from other animals where tusks may be modified canines (like in pigs or walruses).

3. **Function of Tusks**: Elephant tusks serve multiple purposes:
- **Digging**: They can be used to dig for water or roots.
- **Lifting Objects**: Elephants use their tusks to lift and manipulate objects in their environment.
- **Gathering Food**: Tusks help in stripping bark from trees, which is a food source for elephants.
- **Defense**: Tusks can be used for protection against predators or during fights with other elephants.

4. **Relationship with the Trunk**: The tusks also play a role in protecting the trunk, which is another vital tool for the elephant used for drinking and other activities.

5. **Conclusion**: Therefore, an elephant's tusk is classified as a modified incisor, which is essential for various functions in their daily life.

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