The intermediate host of Fasciola is
A. Limnaea truncatula
B. Pila globosa
C. Lamellidens
D. Helix
A. Limnaea truncatula
The intermediate host of Fasciola is A. Limnaea truncatula.
To determine the intermediate host of Fasciola, we can use our knowledge of the lifecycle and characteristics of the organism. Fasciola is a parasitic flatworm, commonly known as a liver fluke, that infects the livers of mammals, including humans.
In the lifecycle of Fasciola, there are two main hosts: the definitive host and the intermediate host. The definitive host is typically a mammal, such as a cow, sheep, or human, where the adult fluke resides and reproduces. The intermediate host, on the other hand, is usually a freshwater snail that plays a crucial role in the lifecycle of the parasite.
Among the options provided:
A. Limnaea truncatula: Limnaea truncatula is actually a species of freshwater snail, making it a potential candidate for the intermediate host of Fasciola. In fact, Limnaea truncatula is one of the most widely recognized intermediate hosts of Fasciola.
B. Pila globosa: Pila globosa is a species of freshwater snail as well. While it can serve as a host for other parasites, it is not known to be an intermediate host of Fasciola.
C. Lamellidens: Lamellidens is a genus of freshwater clams, not snails. Therefore, it is unlikely to be the intermediate host of Fasciola.
D. Helix: Helix is a genus of land snails, not freshwater snails. Land snails do not typically serve as intermediate hosts for Fasciola.
Based on this information, the correct answer would be A. Limnaea truncatula, as it is a species of freshwater snail that is known to serve as an intermediate host for Fasciola.