Question

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

Explanation:

Cnidarians have a diploblastic body plan. They have two germ layers - ectoderm (outer) and endoderm (inner). Between these two layers is a non - cellular jelly - like substance called mesoglea.

• Mesohyl is found in sponges.
• Pseudocoelom is a body cavity that is not completely lined by mesoderm and is found in some other animal groups (e.g., nematodes).
• Mesoderm is the third germ layer which is present in triploblastic animals (cnidarians are diploblastic).

Answer:

noncellular mesoglea