Chapter 7 Quiz Sub-phylum Vertebrata ( Fish , sharks,Rays)

Scientist think that ___ evolved during the Cambrian period,allowing vertebrates to become very successful predators

• cells

• photosynthesis

• jaws

• none of the above

You find more diversity among reef or bottom fish than among open ocean and schooling fish because open ocean and schooling fish live in the same environment

• True

• False

Most Sharks and rays fertilize their eggs

• externally

• internally

• rarely

• asexually

Any organism with a notochord and a dorsal nerve cord is classified in sub phylum Vertebrata

• True

• False

Two orders of fish that are particularly important to worldwide fisheries are orders____ and ______Species in these two orders include__________ , respectively.

• Clupeiforms, Actinoptergii,rays and cod

• Clupeiforms, Gadiformes, herring and cod

• Clupeiforms, Gadiformes,pollack and tuna

• None of the above

When you compare a ray's anatomy to a"typical" fish anatomy you find

• no similarity at all

• the same basic anatomy with adaption to life on sandy bottoms

• the rays are not actually fish

• none of the above

In most ray -finned fish , eggs are fertilized

• externally

• internally

• on land

• none of the above

Organisms in Class Chondrichthyes include___________and______________

• sharks,ray-finned fish

• rays,ray finned fish

• ray-finned fish, Lampreys

• sharks,rays

The Largest shark is the _____________ which eats _____________

• great white shark , seals

• megamouth shark, squid

• basking shark, plankton

• none of the above

Classes Petromyzontida and Myzin are significant because

• they dominate most food webs

• scientists think they may resemble the early ancestor of ray-finned and sharks

• all species of the class are extinct

• all of the above