Fish and Sharks

What are the distinguishing characteristics of organisms in phylum Chordata?

• Notochord, nerve chord, pharyngeal slits, postanal tail

• Dorsal nerve cord, spinal cord, vertebrae, brain

• Jawed fish with bony skeletons, swim bladder, lateral line, external reproduction

• Brain, spinal cord, peripheral nerves, sensory receptors

What are the distinguishing characteristics of bony fish?

• Notochord, nerve chord, pharyngeal slits, postanal tail, skin

• Dorsal nerve cord, spinal cord, vertebrae, brain, lungs

• Jawed fish with bony skeletons, swim bladder, lateral line

• Brain, spinal cord, peripheral nerves, Ampullae of Lorenzini

What is the classification of ray-finned fish?

• Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Superclass Osteichthyes, Class Actinopterygii

• Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Class Agnatha

• Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Class Chondrichthyes

• Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Class Mammalia

What are the characteristics of ray-finned fish?

• Jawed fish with bony skeletons, most have swim bladders and bony scales, mostly external reproduction

• Jawed fish with bony skeletons, most have swim bladders and bony scales, mostly internal reproduction

• Jawless fish with cartilaginous skin, mostly external reproduction

• Jawless fish with cartilaginous skin, mostly internal reproduction

Which of the following is a body form found in bony fish?

• Fusiform

• Depressiform

• Globular

• All of the above

What is the largest species of shark?

• Whale shark

• Basking shark

• Megamouth shark

• Great white shark

Why are sharks ecologically important?

• They keep food webs balanced and prevent overpopulation of prey species

• They provide a source of food for other marine organisms

• They help maintain the health of seagrass beds

• All of the above

What is the primary function of a fish's swim bladder?

• Assisting in digestion

• Providing buoyancy control

• Filtering water for respiration

• Protecting internal organs

What is the primary function of the lateral line system in fish?

• Assisting in respiration

• Detecting changes in water pressure and movement

• Providing buoyancy control

• Filtering water for digestion

What is the primary function of fish gills?

• Assisting in digestion

• Providing buoyancy control

• Extracting oxygen from water for respiration

• Protecting internal organs