Passage of ova through female reproductive tract is facilitated by

Options

A. ciliary movement
B. amoeboid movement
C. flagellar movement
D. cyclosis.

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the mechanism that facilitates the passage of ova (eggs) through the female reproductive tract.

2. **Identifying the Ova**: Ova are the female gametes, which are released from the ovaries during the menstrual cycle.

3. **Role of the Oviduct**: Once the ovum is released, it is collected by the oviduct (also known as the fallopian tube). This is the pathway through which the ovum travels to reach the site of fertilization.

4. **Movement Mechanism**: The ovum itself is static and does not have the ability to move on its own. Therefore, it relies on external mechanisms for its transport.

5. **Ciliary Movement**: The inner lining of the oviduct is lined with cilia, which are hair-like projections. These cilia move in a coordinated manner to create a current that helps in the movement of the ovum through the oviduct.

6. **Conclusion**: The passage of ova through the female reproductive tract is facilitated by the ciliary movement in the oviduct.

### Final Answer:
The passage of ova through the female reproductive tract is facilitated by **ciliary movement**.

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