Monophyodont teeth occur in

Options

A. Humans
B. Forg
C. Whale
D. Rat

Answer

To determine which organism has monophyodont teeth, let's analyze the options provided:

1. **Understanding Monophyodont Teeth**:
- Monophyodont teeth are those that develop only once in an organism's lifetime. This means that the organism does not replace these teeth after they fall out or wear down.

2. **Analyzing the Options**:
- **A. Humans**: Humans have diphyodont teeth, meaning they develop two sets of teeth (primary and permanent).
- **B. Frog**: Frogs do not have true teeth like mammals; they have a different structure for feeding, so they do not fit the definition of monophyodont.
- **C. Whale**: Whales, particularly certain species, have monophyodont teeth. They develop teeth only once and do not replace them.
- **D. Rat**: Rats also have diphyodont teeth, as they continuously grow and are replaced throughout their lives.

3. **Conclusion**:
- Based on the definitions and analysis of the options, the organism that exhibits monophyodont teeth is the **whale**.

**Final Answer**: C. Whale

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