Which of the Following Does Not Have a True Coelom

Question

Which of the following does not have a true coelom?
A) earthworm
B) sea star
C) insect
D) snail
E) roundworm

Accepted Answer

Roundworms do not have a true coelom. They are classified as pseudocoelomates, which means they have a body cavity that is not fully lined by mesoderm-derived tissue, unlike the true coelom found in earthworms, sea stars, insects, and snails.