Animals with three well-defined germ layers and that have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are
A)acoelomate and triploblastic.
B)eucoelomate and diploblastic.
C)pseudocoelomate and triploblastic.
D)quasicoelomate and diploblastic.
E)coelomate and triploblastic.

Question

Quizplus · Accepted Answer

The description given in the question matches the characteristics of acoelomate and triploblastic animals, which have three well-defined germ layers (ectoderm, mesoderm, and endoderm) but lack a body cavity. Therefore, option A is the best choice. Option B is incorrect because diploblastic animals lack a mesoderm layer, while option C describes pseudocoelomate animals that have a fluid-filled cavity instead of a solid mass of tissue. Option D is not a valid term in biology, and option E describes coelomate animals that have a body cavity.

Animals with Three Well-Defined Germ Layers and That Have One