Tusks of elephant are
(a) Upper canines
(b) Upper incisors
(c) Lower incisors
(d) Lower canines

Options

A. Upper cannies
B. Upper incisors
C. Lower incisors
D. Lower canines

Answer

To determine which type of teeth the tusks of an elephant are, we can analyze the options provided:

1. **Understanding the Types of Teeth**:
- **Upper Canines**: These are pointed teeth located in the upper jaw, typically used for tearing food.
- **Upper Incisors**: These are flat, chisel-shaped teeth located in the front of the upper jaw, primarily used for cutting food.
- **Lower Incisors**: Similar to upper incisors but located in the lower jaw.
- **Lower Canines**: These are pointed teeth located in the lower jaw, similar in function to upper canines.

2. **Analyzing the Options**:
- **Option A (Upper Canines)**: While these are important teeth, they are not the tusks of elephants.
- **Option B (Upper Incisors)**: In elephants, the tusks are actually modified upper incisors. They grow continuously and are used for various purposes such as defense and lifting objects.
- **Option C (Lower Incisors)**: These are not tusks and do not serve the same function as the tusks of elephants.
- **Option D (Lower Canines)**: Similar to upper canines, these are not tusks and do not have the same characteristics.

3. **Conclusion**:
- Based on the analysis, the correct answer is **(b) Upper incisors**. The tusks of elephants are modified upper incisors that serve various functions beyond normal chewing.