Question

Bidders canal occurs in
A. Testis in frog
B. Kidney of frog
C. Kidney of rabbit
D. Both B and C

Answer 1

Hint: A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura.
Warty frog species are known as toads but the distinction between frogs and toads is informal.

Complete answer:
Frogs can live both on the land and in freshwater and belong to the class amphibian of phylum chordata.
In India the commonest type of species of frog is Rana tigrina.
They do not have constant body temperature because temperature varies according to the environment.
Such animals are known as cold blooded animals.
The body of a frog accommodates different organ systems such as digestive system, circulatory system, respiratory system, nervous system, excretory system and reproduction system.
To solve the above question, we need to know about the reproductive system of frogs.
Frogs have a well organized male and female reproductive system.
Male reproductive organs consist of a pair of yellowish ovoid testes which are found adhered to the upper parts of the kidney by a double fold of peritoneum called mesorchium.
Vasa efferentia are 10-12 cm in number that arises from the testes.
They enter the bidder’s canal.
Finally it connects with the urinogenital duct and opens into the cloaca.

So, the correct option is option B. Kidney of frogs.

Note:
The system of control and coordination is highly developed in frogs which include the neural system and endocrine glands.
It consists of two olfactory lobes, two cerebral hemispheres, a pineal body, two optic lobes, a cerebellum and a medulla oblongata.
Muscular coordination and posture are controlled by the cerebellum.
The medulla oblongata regulates respiration, digestion and other automatic functions.
The relative size of the cerebrum in frogs is much smaller than it is in humans.