_______________takes place on the ampulla of the fallopian tube of the female reproductive system.

Answer

**Step-by-Step Text Solution:**

1. **Identify the Structure**: The question asks about a specific process that occurs in the female reproductive system, particularly in the fallopian tube.

2. **Understand the Fallopian Tube**: The fallopian tube consists of several parts:
- Fimbriae (the finger-like projections)
- Infundibulum (the funnel-shaped opening)
- Ampulla (the middle section)
- Isthmus (the narrow section leading to the uterus)

3. **Locate the Ampulla**: The ampulla is the middle portion of the fallopian tube, which is crucial for the reproductive process.

4. **Process of Ovulation**: When an ovum (egg) is released from the ovary, it travels through the fallopian tube. It typically reaches the ampulla around the 14th day of the menstrual cycle.

5. **Fertilization**: The key process that occurs in the ampulla is fertilization. This is where the sperm meets the ovum, leading to the formation of a zygote.

6. **Conclusion**: Therefore, the correct answer to the question is that **fertilization** takes place on the ampulla of the fallopian tube in the female reproductive system.

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