Fish and amphibians

The flexible rod that is present in all Chordates at some stage of their life is called the

• nerve cord
• gill slit
• notochord
• backbone

An animal that can not produce much internal body heat is a

• endotherm
• epitherm
• ectotherm
• hemitherm

An animal that can control its internal body temperature is a

• endotherm
• epitherm
• ectotherm
• hemitherm

Most fish reproduce by

• budding
• external fertilization
• internal fertilization
• regeneration

External fertilization in fish is also called:

• spinning
• budding
• metamorphosis
• spawning

Which of the following is NOT a cartilaginous fish?

• Ray
• Eel
• Skate
• Shark

Which of the following is NOT a jawless fish?

• Eel
• Hagfish
• Lamprey

What organ is responsible for regulating buoyancy in a bony fish?

• swim bladder
• operculum
• lateral line
• dorsal fin

What structure helps fish detect movement or vibration in the water?

• swim bladder
• operculum
• lateral line
• dorsal fin

What structure helps protect and move water over the gills?

• swim bladder
• operculum
• lateral line
• dorsal fin