Non-bony fish!

What kind of scales does a shark have?

• Placoid
• Ganoid
• Ctenoid
• Cycloid

What is a shark's adaptation to maintain neutral buoyancy?

• Fluid in the ears
•  Gas filled bladder
• Large oily liver
• Nictitating membrane

What are the electroreceptors in the head of sharks, skates, and rays capable of detecting week electrical signals produced by muscular activity in other creatures?

• Operculum
• Chondrichthyes
• Echolocation
• Ampullae of Lorenzini

What is the special electroreceptor organs near the shark's nose called?

• Ampullae of Lorenzini

• electro fields

• placoid scales

• nose hairs

Tags

NGSS.MS-LS1-8

What is the largest shark species?

• Basking shark

• Dogfish shark

• Whale shark

• Greenland shark

How long have sharks been on the Earth?

• 65 million years

• 50 thousand years

• 300 million years

• 30 million year

What is the name of the ancestor of the shark?

• Megalodon

• Leviathan

• Crocodile

• Mastodon

A flexible connective tissue of cells and protein

• Protochordates

• Tunicates

• Cartilage

• Dendrite

A fish whose body is composed entirely of cartilage is

• Cartilagenous

• Tunicate

• Protochordate

• Dendrite

Breathing holes located on the dorsal side behind each set of eyes are called

• Gills

• Ventricles

• Spiracles

• None of these