REPRODUCTIVE SYSTEM:-

• Frogs have well organised male and female reproductive systems.
• Male reproductive organs consist of a pair of yellowish ovoid testes which are found adhered to the upper part of kidneys by a double fold of peritoneum called mesorchium.
• Vasa efferentia are 10-12 in number that arise from testes.
• They enter the kidneys on their side and open into Bidder’s canal.

• Finally it communicates with the urinogenital duct that comes out of the kidneys and opens into the cloaca.
• The cloaca is a small, median chamber that is used to pass faecal matter, urine and sperms to the exterior.
• The female reproductive organs include a pair of ovaries..The ovaries are situated near kidneys and there is no functional connection with kidneys.
• 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.

• Fertilisation is external and takes place in water.
• Development involves a larval stage called tadpole.
• Tadpole undergoes metamorphosis to form the adult.