The Question
The part in the amniotic egg that provides nutrients to the developing embryo:
A Yolk
B Chorion
C Amnion
D Shell
Details
💡 Hint
Think about what a growing organism needs most to develop. Which part of the egg is typically associated with providing sustenance?
📝 Solution Steps
- Step 1: Recall the structure of an amniotic egg.
- Step 2: Identify the primary function of each component listed (Yolk, Chorion, Amnion, Shell).
- Step 3: Determine which component’s function is to provide nutrients to the developing embryo.
📚 Explanation
The amniotic egg contains several membranes, each with a specific function to support the developing embryo. The yolk sac is a membrane-bound sac that contains the yolk, which is rich in nutrients (fats and proteins). This yolk serves as the primary food source for the embryo, providing the energy and building blocks needed for growth and development. The chorion is involved in gas exchange, the amnion encloses the embryo in amniotic fluid for protection, and the shell provides overall protection and prevents water loss.
✅ Answer
A
⚠️ Common Mistakes
- Confusing the function of the yolk (nutrition) with the amnion (protection) or chorion (gas exchange).