If ovaries from a pregnant women are removed in 4th month of pregnency then

Options

A. Development of embryo becomes abnormal
B. Abortion occurs after some time
C. Embryo develops normally till birth
D. None of these

Answer

To solve the question regarding the effects of removing ovaries from a pregnant woman in the 4th month of pregnancy, we can break down the reasoning step by step:

### Step-by-Step Solution:

1. **Understanding the Role of Ovaries During Pregnancy**:
- During the early stages of pregnancy, the ovaries produce hormones such as estrogen and progesterone, which are crucial for maintaining the pregnancy.

2. **Function of the Corpus Luteum**:
- After fertilization, the corpus luteum (formed from the ruptured follicle after ovulation) continues to produce these hormones to support the pregnancy until the placenta is fully developed.

3. **Development of the Placenta**:
- By the 4th month of pregnancy, the placenta has usually developed sufficiently to take over the hormonal functions necessary for maintaining the pregnancy.

4. **Role of Human Chorionic Gonadotropin (HCG)**:
- The placenta secretes Human Chorionic Gonadotropin (HCG), which helps maintain the corpus luteum and stimulates it to produce hormones until the placenta can produce them on its own.

5. **Impact of Ovarian Removal**:
- If the ovaries are removed at this stage, the placenta is already capable of producing the necessary hormones to maintain the pregnancy. Therefore, the removal of the ovaries will not adversely affect the embryo's development.

6. **Conclusion**:
- Since the placenta can maintain the pregnancy independently of the ovaries after the 4th month, the embryo will continue to develop normally until birth.

### Final Answer:
- The correct option is **C: embryo develops normally till birth**.