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Home Q & A Board Biology-Related Homework Help General Biology
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RICHDANGER123 RICHDANGER123
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6 years ago
What is the function of the yolk sac in human development?
  1.It is a lining of the placenta.
  2.It is the source of the urinary bladder for the placenta.
  3.It becomes the site of red blood cell formation.
  4.It encloses and protects the embryo in a fluid-filled cavity.

Question 2

Which structure is not derived from mesoderm?
  1.cartilage
  2.blood vessels
  3.epidermis
  4.reproductive tract
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RedishRedish
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6 years ago
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RICHDANGER123 Author
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#2
6 years ago
Passed my quiz with this!
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#3
6 years ago
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