Marine Fishes

Front

What are the three main classes of fish?

Back

Agnatha (Jawless), Chondrichthyes (Cartilaginous), Osteichthyes (Bony)

Front

What is the operculum in bony fish?

Back

The bony plates covering a bony fish's gills.

Front

Do all fish use gills for respiration?

Back

True

Front

What is the function of the swim bladder in bony fish?

Back

It controls the fish's depth in the water.

Front

What do lampreys and hagfish lack?

Back

Jaws.

Front

What is the primary difference between Chondrichthyes and Osteichthyes?

Back

Chondrichthyes have cartilaginous skeletons, while Osteichthyes have bony skeletons.

Front

What is the lateral line system in fish?

Back

A sensory system that detects water movements and vibrations.

Front

What is the role of the caudal fin in fish?

Back

It provides propulsion and helps with steering.

Front

What adaptations do fish have for living in aquatic environments?

Back

Gills for breathing, streamlined bodies for swimming, and fins for movement.

Front

What is the significance of the fish's liver?

Back

It helps in buoyancy and stores energy.