Question

Check those statements below that describe a fluke that belongs to the class Monogenea:

- These flukes lack a larval form and, therefore, are considered to be monogentic.

- The flukes of the Monogenea have only a single generation in their life cycle.

- The life cycle follows the pattern: Adult lays egg, egg becomes larva, larva becomes adult.

- Many are external parasites of fish.

Answer 1

The statement that confirms the position of flukes to the class Monogenea is the flukes of the Monogenea have only a single generation in their life cycle. Thus one adult develop from one egg. Therefore, these animals are named as monogenetic.

The last statement saying many are external parasites of fish is also true. They attach to the gill filaments of host. They feed on the epithelial cells, mucus or blood.