Question

Differentiated embryonic layers are called
I. ectoderm
II. endoderm
III. mesoderm
IV. mesoglea

• A. I, II and IV
• B. I, II and III
• C. II, III and IV
• D. I, III and IV

Answer 1

Answer: (B)

Ectoderm, endoderm and mesoderm are the differentiated embryonic layers in animals. Mesoglea is the undifferentiated layer present in between the ectoderm and endoderm in sponges.