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  1. Acoelomate Definition and Examples - ThoughtCo

  2. Structure of Planaria (Dugesia) (With Diagram) | Zoology

  3. Dugesia - Wikipedia

  4. Dugesia Tigrina: Habitat, Structure and Locomotion - Biology …

  5. Dugesia tigrina - ADW

  6. Reading: Flatworms | Biology II Laboratory Manual - Lumen …

  7. Exercise 37: Phyla Platyhelminthes and Nematoda - Quizlet

  8. Article: What is a Planarian - The Biology Corner

  9. Phylum Platyhelminthes- Characteristics, Classification and …

  10. Reading: Flatworms - Biology LibreTexts