Marine Fish Practice Test

Front

What is the age of a fish with 8 bands of growth rings on its scales?

Back

8 years old.

Front

What structure prevents materials from damaging gill filaments?

Back

Gill Rakers.

Front

What are the breathing holes found behind each eye of a shark, ray, or skate called?

Back

Spiracles.

Front

What is the process called when water flows across the gill filaments?

Back

Counter-current Exchange.

Front

Which of the following is NOT a jawless fish: Skate, Lamprey, Hagfish?

Back

Skate.

Front

What are the main functions of gills in fish?

Back

Gills are responsible for gas exchange, allowing fish to breathe underwater.

Front

What is the role of scales in fish?

Back

Scales protect the fish's body and reduce water resistance.

Front

What is the difference between jawless and jawed fish?

Back

Jawless fish lack jaws and have a more primitive structure, while jawed fish have developed jaws for feeding.

Front

What is the significance of the operculum in fish?

Back

The operculum covers and protects the gills and helps in the respiration process.

Front

What is the function of the ampullae of Lorenzini in sharks?

Back

They detect electric fields in the water, aiding in navigation and hunting.