Poultry Judging Practice Test 2025 – Complete Exam Prep

Question: 1 / 515

What is the primary factor affecting the nutrition of an embryo during its development?

Shell

Albumen

Yolk

The yolk is the primary factor affecting the nutrition of an embryo during its development because it serves as the main source of nutrients. The yolk contains essential proteins, fats, vitamins, and minerals that are critical for the growth and development of the embryo. As the embryo develops, it utilizes the nutrient-rich yolk for energy and as building blocks to form various tissues and organs.

The shell, while important for protection, does not contribute to the nutritional content available to the embryo. The albumen, or egg white, provides some protein and water, but it is not the main nutrient source compared to the yolk. The air cell allows for gaseous exchange, facilitating respiration as the embryo develops, but it does not supply nutrition. Therefore, the focus on the yolk highlights its crucial role in embryonic development.

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Air cell

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