The process of yolk synthesis is called :-

Options

A. Lipogenesis
B. Glycogenesis
C. Vitellogenesis
D. Oogenesis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the process of yolk synthesis. Yolk is a nutrient-rich substance found in the eggs of many animals, and its synthesis is crucial for the development of the embryo.

2. **Identifying the Correct Term**: The term that refers to the synthesis of yolk is "vitilogenesis." This term specifically describes the deposition of yolk in the oocyte (the female germ cell).

3. **Explaining Vitilogenesis**: Vitilogenesis involves the accumulation of yolk material within the oocyte. This process is essential because the yolk serves as a food reserve for the developing embryo, providing necessary nutrients during early stages of development.

4. **Differentiating from Other Terms**:
- Lipogenesis refers to the formation of fat.
- Glycogenesis refers to the formation of glycogen.
- Oogenesis refers to the formation of the female gamete (oocyte), not specifically the yolk.

5. **Conclusion**: Thus, the correct answer to the question is "vitilogenesis," as it specifically pertains to the synthesis and deposition of yolk in the oocyte.

**Final Answer**: The process of yolk synthesis is called vitilogenesis.

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