What criteria differentiates a pseudocoelomate versus a coelomate animal?
A)A pseudocoelomate animal is diploblastic and the body cavity is partially lined by endoderm.
B)A pseudocoelomate animal is diploblastic and the body cavity is completely lined by mesoderm.
C)A coelomate animal is triploblastic and the body cavity is completely lined by mesoderm.
D)A coelomate animal is triploblastic and the body cavity is completely lined by endoderm.
E)A coelomate animal is diploblastic and the body cavity is completely lined by mesoderm.

Question

Quizplus · Accepted Answer

A coelomate animal is triploblastic (having three germ layers: ectoderm, mesoderm, and endoderm) and the body cavity is completely lined by mesoderm. A pseudocoelomate animal also has three germ layers but the body cavity is only partially lined by mesoderm, instead, it is lined by both mesoderm and endoderm. Option A and B are incorrect as they describe diploblastic animals, which lack a true body cavity. Option D and E are also incorrect as coelomate animals cannot be diploblastic.

What Criteria Differentiates a Pseudocoelomate Versus a Coelomate Animal