Question

Ampullae of Lorenzini occur in
A. Fish
B. Lizard
C. Frog
D. Rabbit

Answer 1

Ampullae of Lorenzini are sensory organs which helps the organism to sense prey by detecting the electric fields which are generated by the activity of the prey.

Complete answer:
Ampullae of Lorenzini are sensory organs found in cartilaginous fish such as sharks, rays and chimaeras and these sensory organs are electroreceptors. These are sensitive to electric fields which helps the shark to sense the electric field in water which is generated by the activity of prey.
Ampullae consists of a jelly-filled network of pores which are visible as dark spots in the skin which provides the sense capability of detecting electric and magnetic fields.
If we look at options now, option A is Fish. It is the correct option since Ampullae of Lorenzini is found in fishes mainly cartilaginous fishes like in sharks, rays and chimeras. Therefore, this option is the correct one.
Moving to option B which is Lizard. This option is incorrect since these sense organs are not present in lizards but it is present in fishes to sense the electric field generated by prey. Therefore, this option is incorrect and it gets eliminated.
Moving to option C which is Frog, it is also incorrect since these sense organs are also not present in frogs but they are present in fishes. Therefore, this option is incorrect and it gets eliminated.
Last option D is Rabbit which is also incorrect as Ampullae of Lorenzini are sense organs in fishes or electroreceptors. These are not present in Rabbit but only present in fishes therefore this option is incorrect and it gets eliminated.

Thus, the correct answer is option A which is Fish.

Note: Ampullae of Lorenzini occur in fish as an electroreceptor to sense the electric field when they prey is near them then the electric field is generated which can be sensed by the sharks due to the presence of these sense organs which have jelly-filled network of pores. The Ampullae are clustered in groups inside the body which are connecting with different parts of skin.