Question

Study and identify the correct combinations.
(a) Amnion - Somatopleure - Protection
(b) Allantois - Splanchnopleure - Placenta formation
(c) Yolk sac - Midgut - Nutrition
(d) Chorion - Outer wall of amniotic folds - Excretion.

• A. a, b
• B. b, d
• C. a, c
• D. b, c

Answer 1

Answer: (A)

a, b

• Amnion is formed from the somatopleure and is involved in protective functions.
  
• Allantois is formed from the splanchnopleure and is majorly involved in the formation of the placenta.
  
• The yolk sac is involved in providing nutrition to the developing embryo and is formed by the cells of the hypoblast that are found adjacent to the embryonic disc and not by the midgut.
  
• Chorion is the outer wall of the amniotic folds and is involved in the formation of the placenta and not in excretion.
  

So, the correct answer is 'a, b'.