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JIPMER2012ZoologyHuman Reproduction

Which is regarded as urinary bladder of embryo?

Options

  1. AAmnion
  2. BAllantois
  3. CChorion
  4. DYolk sac

Correct answer

B. Allantois

Step-by-step solution

Allantois is an extraembryonic membrane developed as an outgrowth from hindgut. In the eggs of reptiles and birds, it functions as a urinary bladder and stores the waste excretory products. It also provides oxygen (in reptiles, birds and mammals) and food (in mammals) to the embryo.

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