Select the correct route for the passage of sperms in male frogs

Options

A. (a) Testes`to`Bidder's canal`to`kidney`to`vasa efferentia`to`Urinogenital duct `to`cloaca
B. (b) Testes`to`vasa efferentia`to`kidney`to`seminal vesicle`to`urinogenital duct`to`cloaca
C. (c) Testes`to`vasa efferentia`to` Bidder's canal`to`ureter`to`cloaca
D. (d) Testes`to`vasa efferentia`to`kidney`to`bidder's canal`to`urinogenital duct`to`cloaca

Answer

**Step-by-Step Solution:**

1. **Identify the Starting Point**: The process begins in the testes, which are responsible for producing sperm in male frogs.

2. **Passage through Vasa Afferentia**: From the testes, the sperm travels through the vasa afferentia. These are the tubes that transport the sperm from the testes.

3. **Movement to the Kidney**: After passing through the vasa afferentia, the sperm enters the kidney. The kidney in frogs plays a role in both excretion and reproduction.

4. **Travel through Bidder's Canal**: Within the kidney, the sperm moves through a structure known as Bidder's canal. This canal serves as a passageway for the sperm collected from the testes.

5. **Through the Ureter (Urinogenital Duct)**: After Bidder's canal, the sperm continues its journey through the ureter, also referred to as the urinogenital duct. This duct is crucial for transporting sperm to the next stage.

6. **Final Destination - Cloaca**: Finally, the sperm reaches the cloaca. The cloaca is a common chamber that serves multiple functions, including the excretion of urine, fecal matter, and sperm.

7. **Conclusion**: The correct route for the passage of sperm in male frogs is:
- Testes → Vasa Afferentia → Kidney → Bidder's Canal → Ureter (Urinogenital Duct) → Cloaca.

**Correct Answer**: D) Testes → Vasa Afferentia → Kidney → Bidder's Canal → Ureter (Urinogenital Duct) → Cloaca.

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