Q2: Jawless and Cartilaginous Fish

What kind of scales does a shark have?

• Placoid
• Ganoid
• Ctenoid
• Cycloid

Fish are...

• Vertebrates
• Invertebrates

Lampreys and hagfish lack

• teeth

• heads

• mouths

• jaws

Tags

NGSS.MS-LS4-2

Which type of fish is the most primitive?

• Jawless

• Cartilaginous

• Bony

• Fresh water

Cartilage is different from bone because

• It's more flexible

• It's lighter

• Both answers are correct

The lobes of the caudal fin in most sharks are:

• Of equal size

• The top lobe is bigger than the bottom

• The bottom lobe is bigger than the top

Tags

NGSS.MS-LS4-2

Where are shark jaws located to allow for a very streamlined form?

• Dorsally

• Ventrally

• Anteriorly

• Posteriorly

These cartilaginous fish live on the bottom, lack a stinging spine and lay eggs

• Sting rays

• Electric rays

• Manta rays

• Skates

Tags

NGSS.MS-LS4-2

In what CLASS does this species belong?

• Porifera

• Chondrichtyes

• Osteichtyes

• Lateral Line

Tags

NGSS.MS-LS4-2

What is the function (job) of fish gills?

• To absorb water from the water
• To make the fish faster
• To make the fish lighter
• To absorb oxygen from the water