Laurer's canal is found in

Options

A. Amoeba
B. Paramecium
C. Fasciola
D. Hydra.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism:** Laurer's canal is specifically associated with certain flatworms, particularly the liver fluke, which is scientifically known as *Fasciola hepatica*.

2. **Function of Laurer's Canal:** Laurer's canal serves as a temporary opening that develops on the dorsal body surface during the breeding season. It plays a role in the reproductive process of these organisms.

3. **Location of Laurer's Canal:** In *Fasciola hepatica*, Laurer's canal arises from the ovary and is involved in the reproductive system of the organism.

4. **Reproductive Process:** During reproduction, cross-fertilization occurs in the bile duct of the host (such as a horse). The insertion of the copulatory organ (cyrus) into Laurer's canal facilitates this process.

5. **Conclusion:** Therefore, Laurer's canal is found in *Fasciola hepatica*, a type of flatworm.

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