(a) Amnion
(b) Placenta
Solution:-
The space between the amnion and the embryo is filled by amniotic fluid.
1. Protects the embryo from physical injury caused by jerks or mechanical shocks.
2. Maintains a constant pressure surrounding the embryo.
3. Allows for some restricted mobility of the foetus. (b) Placenta
(b) The following are the functions:
1. The growing embryo is a live thing. It requires food and air to survive.
2. It excretes nitrogenous wastes and carbon dioxide, both of which must be removed on a regular basis.
3. The placenta functions as an endocrine gland as well.