In human beings monophyodont teeth are

Options

A. 6 premolars + 6 molars
B. 12premolars + 4molars
C. 4 premolars + 8molars
D. 8 premolars + 4 molars

Answer

To solve the question "In human beings, monophyodont teeth are?", we need to understand the concept of monophyodont teeth and identify which teeth in humans fit this classification.

### Step-by-Step Solution:

1. **Understanding Monophyodont Teeth**:
- Monophyodont teeth are defined as teeth that are present in only one set throughout an individual's life and are not replaced. This means that once these teeth emerge, they do not fall out and are not replaced by another set.

2. **Identifying Human Teeth Types**:
- Humans typically have two sets of teeth during their lifetime: primary (deciduous) teeth and permanent teeth. However, certain types of teeth are classified as monophyodont.

3. **Evaluating the Options**:
- **Option 1**: 6 premolars and 6 molars.
- This is incorrect as humans have 8 premolars and 12 molars (including wisdom teeth).
- **Option 2**: 12 premolars and 4 molars.
- This is also incorrect; humans have 8 premolars and 12 molars.
- **Option 3**: 4 premolars and 8 molars.
- This option is incorrect as well; humans have more than 4 premolars.
- **Option 4**: 8 premolars and 4 molars.
- This option is incorrect because humans have 8 premolars and typically 12 molars (including wisdom teeth).

4. **Conclusion**:
- The correct answer is not explicitly listed in the options provided. However, in the context of human dentition, the only true monophyodont teeth are the **incisors**, which do not get replaced after the permanent set emerges.

### Final Answer:
- In human beings, the monophyodont teeth are **incisors**.