A. Chalaza
B. Yolk
C. Albumen
D. Embryo disc
Correct Answer:
Option B – Yolk
Explanation
Special temporary organs or embryonic membranes form within the egg, both to protect the embryo and to provide for its nutrition, respiration, and excretion. These organs include the yolk sac.
The yolk sac is also responsible for the initial circulation and is in charge of delivering nutrients, via a primitive aorta, to the developing embryo through a process called vitelline circulation.
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