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  • Select the  incorrect statement.  Option: 1 Amnion is the  layer containing amniotic fluid that acts as a shock absorber to the

Select the  incorrect statement.
 

Option: 1

Amnion is the  layer containing amniotic fluid that acts as a shock absorber to the embryo and also prevents dessication of the embryo
 


Option: 2

Yolk sac is a an extraembryonic membrane but absent in humans 


Option: 3

Allantois is a primitive excretory duct of the embryo that will become part of the urinary bladder.
 


Option: 4

Chorion takes part in the formation of placenta.
 


Answers (1)

best_answer

Extraembryonic Layers -

  • These membranes are formed outside the embryo from the trophoblast and embryonic layers only in amniotes (reptiles, birds and mammals) and perform specific functions.
  • There are four extraembryonic membranes:
    • Amnion
    • Yolk sac
    • Allantois
    • Chorio

 

  • Amnion acts as shock absorber and prevents dessication 
  • Chorion forms a part of placenta
  • Allantois forms part of urinary bladder 
  • Yolk sac is present in humans and provides nourishment to embryo

Hence b is wrong 

Posted by

Sayak

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