Question Detail
Question
Which of the following phyla is characterized by a pseudocoelom and a complete digestive system?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Nematodes (roundworms) possess a pseudocoelom, a body cavity not fully lined by mesoderm, and have a complete digestive tract with mouth and anus.
Hint
These unsegmented worms are found in virtually every habitat.