Question

Lateral line organs do not occur in -

• A. Bony fishes
• B. Cartilaginous fishes
• C. Reptiles
• D. Amphibian larvae

Answer 1

The correct option is C Reptiles

Lateral line organ system, also called laterals system, a system of tactile sense organs, unique to aquatic vertebrates from cyclostome fishes (lampreys and hagfish) to amphibians that serves to detect movements and pressure changes in the surrounding water.
Reptiles are terrestrial whereas cartilaginous fishes, amphibian larvae and bony fishes are all aquatic and require lateral line organ system.

So, the correct answer is- option b.