Function of placenta is:-

Options

A. Supply of `O_(2)` to embryo
B. Removal of `CO_(2)` produced by the embryo
C. Produced several hormones
D. ALL of these

Answer

### Step-by-Step Solution:

1. **Understanding the Placenta**: The placenta is a temporary organ that forms during pregnancy. It connects the developing fetus to the uterine wall of the mother, allowing for nutrient uptake, waste elimination, and gas exchange.

2. **Supply of Oxygen**: One of the primary functions of the placenta is to supply oxygen to the embryo. The maternal blood delivers oxygen through the placenta, which is then transferred to the fetal blood.

3. **Removal of Carbon Dioxide**: The placenta also plays a crucial role in removing carbon dioxide produced by the embryo. This waste gas is transferred from the fetal blood to the maternal blood for elimination.

4. **Nutrient Transfer**: The placenta facilitates the transfer of essential nutrients from the mother to the fetus, ensuring proper growth and development.

5. **Hormone Production**: The placenta produces several hormones, including estrogen and progesterone, which are vital for maintaining pregnancy and supporting fetal development.

6. **Conclusion**: Given that the placenta is responsible for supplying oxygen, removing carbon dioxide, and producing hormones, the correct answer to the question about the functions of the placenta is "all of these."

### Final Answer:
The function of the placenta includes the supply of oxygen to the embryo, removal of carbon dioxide produced by the embryo, and production of several hormones. Therefore, the correct option is **all of these**.

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