Question

Many endoparasitic species of the Platyhelminthes clade Trematoda have complex life cycles with both intermediate and definitive (final) hosts. What are the usual animals that serve has the intermediate and definitive hosts?

Answer 1

The usual animals that serve as intermediate hosts for trematodes are mollusks, including snails. The primary hosts, where sexual reproduction takes place, are usually vertebrates such as humans and other mammals.

Step-by-step explanation:

Many endoparasitic species of the Platyhelminthes clade Trematoda have complex life cycles with both intermediate and definitive hosts. The usual animals that serve as intermediate hosts for trematodes are mollusks, including snails. The primary hosts, where sexual reproduction takes place, are usually vertebrates such as humans and other mammals.