Superphylum Lophotrochozoa: Flatworms, Rotifers, and Nemerteans

Review Questions

Which group of flatworms are primarily ectoparasites of fish?

  1. monogeneans
  2. trematodes
  3. cestodes
  4. turbellarians

Hint:

A

The rhynchocoel is a ________.

  1. circulatory system
  2. fluid-filled cavity
  3. primitive excretory system
  4. proboscis

Hint:

B