The passage of ova in female frog is 

Options

A. ovaries - oviducts - ovisac - cloaca - coelom
B. ovisacs - ostia - coelom - oviducts - oviaries - cloaca
C. ovaries - coelom - ostia - oviducts - ovisac - cloaca
D. ovaries - coelom - ovisac - cloaca - oviduct

Answer

To understand the passage of ova in female frogs, we need to follow the sequence of structures involved in the reproductive process. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Ovaries**: The process begins in the ovaries, which are the female reproductive glands. The ovaries are responsible for producing ova (eggs).

2. **Oocytes**: The eggs produced in the ovaries are referred to as oocytes. These are immature eggs that will eventually mature into ova.

3. **Oviducts**: After the oocytes are formed in the ovaries, they are transported to the oviducts. The oviducts serve as the passageway for the ova to move from the ovaries.

4. **Ostea**: The oviducts have openings called ostea, which allow the ova to enter the oviducts from the body cavity.

5. **Ovisac**: Once the ova are in the oviducts, they can be stored in the ovisac, which is a sac-like structure that holds the eggs.

6. **Cloaca**: Finally, the ova are expelled through the cloaca, which is a common chamber that serves as an outlet for the urinary, reproductive, and digestive tracts.

### Correct Sequence:
The correct sequence of the passage of ova in female frogs is:
**Ovaries → Oviducts → Ostea → Ovisac → Cloaca**.

### Conclusion:
Thus, the correct option regarding the passage of ova in female frogs is option C.

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