
Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire
Edition 6ISBN: 978-0134324876
Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire
Edition 6ISBN: 978-0134324876 Exercise 19
The yolk sac
A) is a primary source of nourishment for human embryos.
B) is the embryo's major contribution to the placenta.
C) contains primordial germ cells.
D) encloses the embryo in a fluid-filled sac.
A) is a primary source of nourishment for human embryos.
B) is the embryo's major contribution to the placenta.
C) contains primordial germ cells.
D) encloses the embryo in a fluid-filled sac.
Explanation
It is the chorion, not the yolk sac, whi...
Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire
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