The yolk sac
A) is the first site of blood cell formation.
B) is the fetal half of the placenta.
C) becomes the umbilical cord vessels.
D) provides nutrition until the placenta is formed.
Correct Answer:
Verified
Q25: The allantois
A)is the first site of blood
Q26: The process of gastrulation ends with the
Q27: From which primary germ layer does the
Q28: Which is the last stage in pre-embryonic
Q29: Which of the following is NOT a
Q31: Identical twins involve _ egg(s)and _ sperm.
A)two;two
B)one;one
C)two;one
D)one;two
Q32: A typical pregnancy test detects the presence
Q33: What important event does NOT occur in
Q34: From which primary germ layer does the
Q35: The pre-embryonic structure created by cleavage is
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents