Which feature characterizes extraembryonic membranes of chicks and turtles, but not humans?
A) They are part of the embryo.
B) They function in nutrition.
C) They are formed from contributions of ectoderm, endoderm, and mesoderm.
D) They function in storage of nitrogenous waste.
E) They function in gas exchange.

Question

Quizplus · Accepted Answer

Extraembryonic membranes in chicks and turtles, such as the allantois, function in the storage of nitrogenous waste, a feature not shared with humans. In humans, waste products are managed via the mother's excretory system through the placenta.

Which Feature Characterizes Extraembryonic Membranes of Chicks and Turtles, but Not