Jawless Fish

All Jawless Fish are a part of what superclass?

• Agnatha

• Osteichthyes

• Chondricthyes

• Cephalaspidomorphi

Which of the following is true about all jawless fish?

• They lack jaws, internal ossification, scales, and paired fins.

• The share pore-like gill openings.

• They have an eel0like body form.

• All of the choices are true about jawless fish.

Hagfish are a part of which class?

• Osteichthyes

• Chondrichthyes

• Myxini

• Cephalaspidomorphi

Lampreys are a part of which class of fish?

• Osteichthyes

• Chondrichthyes

• Myxini

• Cephalaspidomorphi

According to your notes, the Class Myxini includes ___ species of hagfish.

• 50

• 60

• 70

• 80

True of False.

Hagfish are blind bottom-dwellers that feed on dead or dying fish.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Parasitic lampreys attach themselves to their host with a ________ mouth and feed on the blood and body fluids of other fish.

• disc-shaped

• c-shaped

• rectangular

• slime

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

• Chondrichthyes

• Osteichthyes

• Agnatha

• Amphibia

What anatomical features are absent in jawless fish?

• Jaws, fins, and stomachs

• Gills, eyes, and hearts

• Scales, tails, and teeth

• Bones, muscles, and skin

Tags

NGSS.MS-LS4-2

Which type of fish was the first to evolve?

• Jawless

• Cartilaginous

• Bony

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2