A) Allantois
B) Chorion
C) Yolk sac
D) Amnion
Correct Answer: A
Solution :
Allantois is an extra-embryonic membrane developed as an outgrowth form hindgut. In the eggs of reptiles and birds, its function as urinary bladder and store the waste excretory products and provide supply of oxygen and food the embryo of reptile, birds and mammals.
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