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ANATOMY
The body cavity of frogs accommodate different organ systems such as 1. Digestive, 2. Circulatory, 3. Respiratory, 4. Nervous and 5. Reproductive systems with well developed structures and functions.
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Frog Morphology & Anatomy
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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.
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