Question

Select the correct route of the passage of sperms in male frogs.
A. Testes - vasa efferentia – Kidney —blidder’s canal - Urinogenital duct - Cloaca.
B. Testes - Bidder’s canal – kidney - vasa efferentia - urinogenital duct - cloaca.
C. Testes – vasa efferentia – kidney – seminal vesicle – urinogenital duct – cloaca.
D. Testes – vasa efferentia – bidder’s canal – ureter – cloaca.

Answer 1

Hint: The most common species of frog found is Rana tigrina.
They belong to class amphibian which means they can live on both land and fresh water.
They are uricotelic which means they excrete urea.

Complete answer:
A frog tailless amphibian belongs to the order Anura.
Some frog species are known as toads but they are not distinguishable from each other not from taxonomy or evolutionary history.
The excretory system of frog consists of
1. Pair of kidneys
2. Ureters
3. Cloaca
4. Urinary bladder
Frog has a well organized system of male and female reproductive systems.
Mae reproductive system consists of a pair of yellowish ovoid testes which are found adhered to the upper part of kidney by a double fold of peritoneum known as mesorchium.
Vasa efferentia is 10-12 in number that arises from the testes of frogs.
They enter the kidneys on their side and open into the bidder's canal.
Finally it reaches with the urinogenital duct that comes out of the kidneys and opens into the cloaca.
Cloaca is a small, median chamber that is used to pass faecal material, urine and sperms out from the body.

So, the correct option is option A. Testes – Vasa efferentia – kidney – bidder’s canal – urinogenital duct – Cloaca.

Note: Female reproductive organ consists of
1. Pair of ovaries
2. Pair of oviduct
3. Urter
4. Cloaca
5. Cloacae aperture
6. Urinary bladder
Ovaries are situated near the kidneys but there is no functional connection with the kidneys.
A mature female can lay 2500 to 3000 ova at a time.