Multiple choice

Worms of the phylum platyhelminthes are triploblastic but do not posses ____________.

  1. alimentary canal

  2. excretory system

  3. nervous system

  4. body cavity

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Worms of the phylum platyhelminthes are triploblastic but do not posses body cavity.