Liver Fluke resides inside

Options

A. Liver
B. Bile ducts
C. Both A and B
D. Liver and duodenum.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question refers to the "liver fluke," which is a type of parasitic flatworm belonging to the class Trematoda.

2. **Determine the Hosts**: The liver fluke has two hosts in its life cycle:
- **Primary Host**: The primary host is typically a mammal, such as a sheep or a human, where the adult liver fluke resides.
- **Secondary Host**: The secondary host is usually a snail, which is involved in the larval stage of the liver fluke's life cycle.

3. **Location in the Primary Host**: In the primary host (e.g., sheep), the liver fluke resides in the bile ducts of the liver. This is where it matures into its adult form.

4. **Duration of Stay**: The liver fluke can stay in the bile ducts of the liver for approximately six to seven weeks before reaching adulthood.

5. **Final Answer**: Therefore, the liver fluke resides inside the bile ducts of the liver in its primary host.

---