Question Detail
Question
Which phylum is characterized as being acoelomate, meaning it lacks a true body cavity?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Both the 'Key Anatomical Features Across Animal Phyla' table and the 'Phylum Platyhelminthes (Flatworms)' section explicitly state that Platyhelminthes are 'Acoelomate (no true body cavity)'.
Hint
Consider the simplest triploblastic phylum where the body is dorsoventrally flattened without internal space.