Question

multiple choice question
in cnidarians, what lies between the outer ectoderm and inner endoderm of the body?
pseudocoelom
noncellular mesoglea
mesoderm
noncellular mesohyl

Explanation:

Cnidarians have a simple body plan. The ectoderm is the outer layer, the endoderm is the inner layer. Between them is a non - cellular layer called mesoglea.

• Pseudocoelom is a body cavity found in some other animals (e.g., nematodes) and is not present in cnidarians.
• Mesoderm is a germ layer found in triploblastic animals (cnidarians are diploblastic, having only ectoderm and endoderm).
• Mesohyl is a non - cellular layer in sponges, not in cnidarians.

Answer:

noncellular mesoglea