Which is absent in Frog

Options

A. Gastric glands
B. Salivary glands
C. Pancreas
D. Liver

Answer

To determine which structure is absent in frogs, we can analyze each option provided:

1. **Gastric Glands**:
- Frogs have gastric glands in their stomach walls. These glands produce gastric juice, which contains enzymes like pepsinogen that are activated to digest food.
- **Conclusion**: Gastric glands are present in frogs.

2. **Salivary Glands**:
- Frogs do not have salivary glands. Instead, the mucus necessary for lubricating food is secreted by the lining of the buccopharyngeal cavity and the esophagus.
- **Conclusion**: Salivary glands are absent in frogs.

3. **Pancreas**:
- Frogs possess a pancreas that produces pancreatic juice, which aids in digestion.
- **Conclusion**: The pancreas is present in frogs.

4. **Liver**:
- Frogs also have a liver, which produces bile that helps emulsify fats during digestion.
- **Conclusion**: The liver is present in frogs.

**Final Answer**: The structure that is absent in frogs is the **salivary glands**.