To solve the question regarding the enzymes present in saliva, we will analyze each option provided and identify the correct enzymes.
### Step-by-Step Solution:
1. **Understanding Saliva Composition**:
- Saliva contains various enzymes that aid in digestion, particularly in the breakdown of carbohydrates.
2. **Analyzing the First Option (Stylene, Sucrose, Amylase)**:
- **Amylase**: This enzyme is indeed present in saliva and is responsible for breaking down starch into dextrin and maltose.
- **Stylene**: This term seems to be a misspelling or confusion with "ptyalin," which is another name for salivary amylase.
- **Sucrose**: This is a sugar, not an enzyme. Therefore, this option is incorrect.
3. **Analyzing the Second Option (Lysozyme, Amylase, Zymase)**:
- **Lysozyme**: This enzyme is present in saliva and helps in breaking down bacterial cell walls.
- **Amylase**: Present in saliva, as discussed earlier.
- **Zymase**: This enzyme is involved in fermentation and is not found in saliva. Thus, this option is also incorrect.
4. **Analyzing the Third Option (Amylase, Sucrase, Ptyalin)**:
- **Amylase**: Present in saliva.
- **Sucrase**: This enzyme is involved in the hydrolysis of sucrose and is primarily found in the small intestine, not in saliva.
- **Ptyalin**: Another name for salivary amylase, which is present in saliva.
- Since sucrase is not present in saliva, this option is incorrect.
5. **Analyzing the Fourth Option (Ptyalin, Lipase, Lysozyme)**:
- **Ptyalin**: Present in saliva (another name for amylase).
- **Lipase**: This enzyme is involved in the breakdown of fats and is also present in saliva.
- **Lysozyme**: Present in saliva, as previously mentioned.
- All three enzymes (ptyalin, lipase, and lysozyme) are present in saliva, making this the correct option.
### Conclusion:
The correct answer is **Ptyalin, Lipase, and Lysozyme** as all three enzymes are present in saliva.
---
