Question

question 8
triploblastic animals form which of the following embryonic germ layers?
a endoderm and ectoderm only
b endoderm, ectoderm, and mesoglea
c mesoglea only
d endoderm, ectoderm, and mesoderm

Explanation:

Triploblastic animals have three embryonic germ layers. Mesoglea is not a germ layer but a jelly - like substance in some organisms. Option A has only two layers. Option C has only mesoglea (not a germ layer). Option D has three germ layers (endoderm, ectoderm, mesoderm) which is correct for triploblastic animals.

Answer:

D. endoderm, ectoderm, and mesoderm