The placenta is formed from The________of the embryo and the________of mother.

Options

A. (1) uterus, trophoblast
B. (2) chorion, endometrium
C. (3) endometrium, chorion
D. (4) inner cell mass, endometrium

Answer

To answer the question, "The placenta is formed from the ________ of the embryo and the ________ of the mother," we need to identify the correct components involved in the formation of the placenta.

### Step-by-Step Solution:

1. **Understanding the Placenta**: The placenta is an organ that forms during pregnancy, facilitating the exchange of nutrients, gases, and waste between the mother and the developing fetus.

2. **Components of the Placenta**: The placenta is formed from two main components:
- The **chorion** from the embryo.
- The **endometrium** from the mother.

3. **Identifying the Correct Answer**:
- The **chorion** is the outermost membrane surrounding the embryo and contains chorionic villi that penetrate the endometrium.
- The **endometrium** is the inner lining of the uterus, which provides the necessary environment and support for the developing placenta.

4. **Final Answer**: Therefore, the correct completion of the statement is: "The placenta is formed from the **chorion** of the embryo and the **endometrium** of the mother."