Whereas _______ Contributes to the _______, _______ Contributes to the _______

Multiple Choice

Whereas _______ contributes to the _______, _______ contributes to the _______.

A) endoderm; lining of the respiratory tract; ectoderm; heart muscles
B) endoderm; nervous system; mesoderm; bones and muscles
C) ectoderm; teeth; endoderm; dermal layer of the skin
D) endoderm; lining of the digestive tract; mesoderm; epidermis
E) ectoderm; nervous system; mesoderm; bones and muscles