Which of the following structures is responsible for gas exchange in the egg of a chicken?
A) yolk sac
B) amnion
C) embryo
D) umbilical cord
E) chorion
Correct Answer:
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Q20: A fertilized egg undergoes cell division without
Q21: In human development, what is the site
Q22: A pregnancy test is sensitive to which
Q23: Which part of the blastocyst will develop
Q24: Implantation occurs during the
A) fertilization.
B) first week.
C)
Q26: The allantois
A) becomes the umbilical blood vessels
Q27: Which of the following serves as an
Q28: Which of the following structures provides nourishment
Q29: The presence of the same homeotic genes
Q30: In fetal circulation, which structure allows blood
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