The Fish

What are the 3 characteristics unique to all Chordates?

• notochord, vertebrae, pharyngeal slits
• notochord, cranium, pharyngeal slits
• notochord, dorsal nerve cord, pharyngeal slits
• notochord, ventral nerve cord, pharyngeal slits

Agnatha means

• have fins
• have backbone
• no jaws
• no skull

What kind of skeleton do Chondrichthyes have?

• cartilaginous
• bondy
• ossicles
• exoskeleton

What is the purpose of a lateral line system?

• detect vibrations in water
• see long distances
• keep fish afloat
• digest food

Which structure is letter C pointing to?

• stomach
• liver
• kidney
• spiral valve

What is structure 7 pointing to?

• clasper
• dorsal spine
• pelvic fin
• caudal fin

Sub phylum cephalochordata includes which of the following?

• Mammals
• Echinoderms
• Lancelets
• Tunicates

Sub phylum urochordata includes which of the following?

• Mammals
• Echinoderms
• Lancelets
• Tunicates

How many chambers do the hearts of fish have?

• one
• two
• three
• four

What structure do sharks use to detect electrical currents?

• Cuadal fins
• Rostral area
• Ampullae of Lorenzini
• Lateral line