Reproductive system of frog: Sexes are separate in frogs, exhibits sexual dimorphism and have well organized male and female reproductive systems.Male reproductive system: Male reproductive system of frog consists of testis, vasa efferentia, urenogenital duct and cloaca.Testis: A pair of yellowish ovoid testis found adhered to the upper part of kidneys by a double fold of peritoneum called mesoorchium.Vasa efferentia: These are 10 to 12 in number that arise from testes, enters the kidney on their side and opens into Bidder's canal. Finally it communicates with the urinogenitalduct.Urinogenital duct comes out of the kidneys and open into the cloaca.Cloaca: The cloaca is a small, median chamber that is used to pass faecal matter, urine and sperms to the exterior.Female reproductive system: The female reproductive system consists of ovaries and oviduct.Ovaries: A pair of ovaries situated near kidneys and there is no functional connection with kidneys.Oviduct: A pair of oviduct arising from the ovaries opens into the cloaca separately.A mature female can lay 2500 to 3000 ova at a time. Fertilization is external and takes place in water.Development involves a larval stage called tadpole.Tadpole undergoes metamorphosis to form the adult.

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