Poultry Judging Practice Test

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Study for the Poultry Judging Test with interactive quizzes. Enhance your skills with multiple choice questions including hints and explanations. Prepare for your exam and excel!

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What part of the egg serves as the main source of nutrition for an embryo during embryogenesis?

Albumen
Yolk
Shell membrane
Chalaza

The correct answer is: Yolk

The yolk is the primary source of nutrition for an embryo during embryogenesis. It contains essential nutrients including proteins, fats, vitamins, and minerals that are critical for the development of the growing embryo. As the embryo grows, it absorbs these nutrients from the yolk through a structure called the yolk sac, which facilitates the transfer of energy and necessary materials for growth. In this context, while the albumen (or egg white) provides some additional protein and water, it is not as nutrient-dense as the yolk. The shell membrane serves to protect the egg and the chalaza, which are twisted strands of protein that help anchor the yolk in the center of the egg, but neither is a source of nutrition for the embryo. Therefore, the yolk stands out as the essential component for supporting the embryo during its early development stages.