Question

Chorion encircles and covers
(a) amnion
(b) yolk-sac
(c) allantois
(d) embryo
(e) all the above

Answer 1

Answer:

• chorion encircles and covers

amnions , yolk sac , allantois and embryo

so answer is option e all of the above

Answer 2

Answer:

The answer is (e) All of the above

Explanation:

The chorion is the outermost fetal membrane that surrounds the embryo. The outer fold on the surface of the yolk sac develops into the chorion, and it lies outside the vitelline membrane. It encircles and covers amnion, yolk-sac, allantois, and embryo.

The main function of the chorion in an egg is to facilitate the exchange of carbon dioxide and oxygen between the embryo and the egg’s external environment. The nitrogenous wastes produced by the embryo are stored by the allantois, and it also facilitates respiration. The protection of the embryo is done by the amnion, it protects from mechanical shock and also supports hydration. The yolk sac is to provide nourishment to the embryo in the form of food.  

#SPJ2