Q.Lateral line sense organs occur in
a. Salamander
b. Frog
c. Water snake
d. Fish

Osteichthyes (Greek osteon, bone) includes marine and freshwater fishes with a bony endoskeleton and typically a spindle-shaped body, covered by ganoid, cycloid or ctenoid scales.

Respiration is by four pairs of filamentous gills, each protected by a bony operculum. An air bladder — present with or without a gut connection — aids gas exchange (lungfishes) and buoyancy control (most ray-finned fishes). The heart is ventral and two-chambered. Excretory organs are mesonephric kidneys, and Osteichthyes are ammonotelic. A well-developed lateral line sens …