Question

Diploblastic animals have

• A. ectoderm, endoderm and mesoderm
• B. ectoderm and mesoderm
• C. ectoderm, endoderm and mesoglea in pouches
• D. ectoderm, endoderm and mesoglea

Answer 1

The correct option is (D)

Explanation of correct option:

1. Diploblastic animals have two cell layers and they are outer ectoderm and inner endoderm.
2. These animals don't have the mesoderm whereas they have middle mesoglea which is an undifferentiated layer.
3. Mesoglea is a jelly-like tissue present in between the ectoderm and endoderm layer.
4. The mesoderm layer is found in triploblastic animals.
5. This layer is responsible for the formation of notochord, organs, muscles, and bones.

Final answer:

Diploblastic animals have ectoderm, endoderm and mesoglea.