Multiple Choice
Which feature characterizes the yolk sac of developing chicks?
A) It is the last of four extraembryonic membranes to form.
B) It is tube-shaped at the top and continuous with the gut of the embryo.
C) Yolk passes through its tube for digestion in the chick's gut.
D) Ectoderm and mesoderm extend to enclose the yolk.
E) It is avascular.
Correct Answer:
Verified
Correct Answer:
Verified
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