Mark the statement which is not true regarding the reproductive system of frog

Options

A. Ovoid testes are adhered to the upper part of kidneys by a double fold of peritoneum called mesorchium
B. Bidder's canal is a longitudinal canal present inside the kidneys carrying sperms
C. Ureters of frog carry both sperms and urine
D. In female frogs , ovaries are both structurally and functionally associated with kidneys.

Explanation

To determine which statement is not true regarding the reproductive system of frogs, we need to evaluate each of the provided statements based on the information about male and female reproductive systems of frogs.

### Step-by-Step Solution:

1. **Understand the Male Reproductive System:**
- The male frog has a pair of oval-shaped testes located on the upper surface of the kidneys.
- The testes are attached to the kidneys by a double fold of peritoneum known as mesorchium.
- Sperm is produced in the seminiferous tubules of the testes, which then leads to the vasa efferentia and into Bidder's canal, where sperm is transported.

2. **Understand the Female Reproductive System:**
- The female frog has a pair of ovaries that produce ova (eggs).
- Each ovary is connected to an oviduct, which leads to the cloaca.
- The ovaries and kidneys are physically attached, but there is no functional relationship between them.

3. **Evaluate Each Statement:**
- **Statement 1:** "Oval testes that is oval shaped testes are attached to the upper part of kidney by a double fold of peritoneum called mesorchium."
- This statement is true.

- **Statement 2:** "Bidder's canal is longitudinal, here this one is Bidder's canal in male frog inside the kidney."
- This statement is also true.

- **Statement 3:** "Ureter of frog carry both sperm and urine."
- This statement is true because the ureter in male frogs is referred to as the urinogenital tract, which carries both urine and sperm.

- **Statement 4:** "In female frog ovaries are both structurally and functionally associated with kidney."
- This statement is not true. While there is a physical attachment between the ovaries and kidneys, there is no functional relationship.

4. **Conclusion:**
- The statement that is not true regarding the reproductive system of frogs is **Statement 4**.

### Final Answer:
**The statement which is not true regarding the reproductive system of frog is: "In female frog ovaries are both structurally and functionally associated with kidney."**

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