Jawless and Cartilaginous Fish

In fish, what is the name of the fluid-filled canal that detects movement and vibrations in water?

• Lateral Line

• Vertical Line

• Horizontal Line

• Lateral Spine

Hagfish produce and excrete this substance to make themselves harder to catch.

• Mucous

• Sweat

• Ink

• Air

What does the fish class name "Agnatha" mean?

• Jawless

• Cartilage fish

• Bony Fish

• Toothy

Cartilage is different from bone because

• It's more flexible

• It's lighter

• Both answers are correct

To which class do most scientists agree that jawless fish belong?

• Chondrichthyes

• Osteichthyes

• Agnatha

• Amphibia

How do hagfish disengage from their prey? (select ALL)

• By biting

• By swimming away

• By tying themselves in knots

• By secreting copious amounts of slime

What subclass do hagfish belong to?

• Myxini

• Chondrichthyes

• Osteichthyes

• Agnatha

Which of the following is a characteristic of jawless fish?

• Presence of jaws

• Lack of paired fins

• Bony skeleton

• Scales covering the body

What is the primary component of the skeleton in cartilaginous fish?

• Bone

• Cartilage

• Calcium

• Keratin

Which of the following fish is an example of a jawless fish?

• Shark

• Ray

• Lamprey

• Salmon