Q.Describe the male reproductive system of the frog with a diagram.

[!TLDR] The male frog's testes connect via vasa efferentia to the kidney, sharing a urinogenital duct that opens into the cloaca. …

[!ANSWER] The male frog's reproductive system is closely integrated with its excretory (kidney) system, forming a combined urinogenital system.

A pair of ovoid testes is attached, via a thin supporting mesentery (the mesorchium), to the upper region of each kidney. Sperm produced in the testes travels through a series of very fine tubules called the vasa efferentia, which pass directly from the testis into the adjacent kidney tissue. Once inside the kidney, the sperm-carrying vasa efferentia join the kidney's own collecting ducts, so sperm is carried onward through the same duct — the kidney's urinogenital duct (Wolffian duct) — that also carries the kidney's urinary waste. This shared duct on each side runs posteriorly and finally opens into the cloaca, a single common chamber at the posterior end of the body that also receives the digestive tract's waste, before everything is expelled to the exterior through a single external opening, the cloacal aperture. …

• Assuming the frog has a dedicated sperm duct separate from the kidney's urinary duct — in the male frog, the two are combined into one urinogenital duct. …