Question

Bidder’s canal is characteristics of
A) Male frog’s kidney
B) Female frog’s kidney
C) Male rabbit’s testes
D) Female rabbit’s testes

Answer 1

Hint: Bidder’s canal is present in animals which are carnivores and helps in conducting sperm via a sequence of vasa efferentia from the testis.

Complete Answer:
- A pair of kidneys, ureters, urinary bladder and cloaca forms the excretory system of frogs. Kidneys are coloured dark red and are present in the body's posterior region.
- There are numerous nephrons or uriniferous tubules in the kidney. They are the functional and structural units of the excretory system.
- The two ureters that come out of the kidney are found. The ureters serve as the urinogenital duct in male frogs and open into the cloaca.
- But the ureters and the cloaca independently open up into the cloaca in female frogs. The male and female reproductive systems are different in male and female.

Now, let us find the solution from the options-
- The bidder canal is found in male reproductive system of frogs.
- The bidder canal is located within the frog's kidney.
- The frog testis is present near to the bidder canal.
- The primary purpose of the bidder channel is to facilitate the conduction of sperm from the testis.
- The bidder canal is linked by many collecting tubules.
- This bidder canal collects the sperm via a variety of 'vasa efferentia' from the testis.
- There are absolutely 10 to 12 'vasa efferentia' that exist to enter the kidney longitudinally.

Note: The reproductive systems of the male and the female are well defined. The following organs, a pair of testes, 10-12 number of Vasa efferentia, bidder canal and a urinogenital duct that opens into the cloaca are included in the male reproductive system. The cloaca is a chamber used to transfer urine, faecal matter, and sperm to the outside. Pair of ovaries, a pair of oviducts that open independently into the cloaca, are in the female reproductive system. Around 2500 to 3000 eggs at a time can be laid by a female frog. In frogs, external fertilisation is seen and happens in water.