Egg Structure and Incubation. 0.0 / 5 ? Environmental and Land-Based Science????GCSEOCR Created by: GeorgiaOlivia2001Created on: 22-02-18 10:54 A protein and fat food supply for a growing chick. Yolk 1 of 7 Supplies food and water and prevents too much jolting. Albumen 2 of 7 Becomes attached to the air space it carries oxygen to the chick and carbon dioxide away from the blood vessels. It stores waste from the chick. Allantois 3 of 7 Thickened, twisted albumen that holds the yolk in place. Chalaza 4 of 7 It is porous and allows gas exchange. Shell 5 of 7 Prevents entry of bacteria. Shell membrane 6 of 7 Allows the exchange of gases between the embryo and the outside. Air space 7 of 7
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