Unit #7 Quiz #5

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Subject:«subject»

Date:«date»

1 The tiger shark has which type of caudal fin:

A homocercal

B heterocercal

C dorsal prominent

D ventral prominent

2 All of the following are in the subclass of Elasmobrachii, EXCEPT:

A sharks

B rays

C chimeras

D skates

3 Using the phylogenetic following tree, which of the following true about placoid scales:

A Placoid scales can be found on any species more advanced than chondrichthyes

B Placoid scales can be found on any species less advanced than chondrichthyes

C Placoid scales can be found on chondricthyes, but no other organisms on this chart

D Placoid scales can be found on any organism that has gills

4 Both subclasses of chondrichthyes had their radiation event:

A Cambrian

B Devonian

C Cretaceous

D Tertiary

5 A shark with the following type of teeth most likely eats

A large fish or mammals

B small, schooling fish

C clams and bivalves

D krill and plankton

6 Scientists have discovered scales of chondrichthyes that date back to the ____________ period.

A Cambrian

B Silurian

C Ordovician

D Quaternary

7 Which of the following is NOT a characteristic of Chimeras

A They have 6 teeth that are constantly replaced

B They have 6 teeth that are permanent and used for grinding shelled inverts

C They have only a single gill slit

D They have fewer organs than a shark or a ray.

8 Many sharks must constantly move so that they can continually wash oxygenated water over their gills. These sharks have which of the following respiratory systems:

A Two Pump

B Ram Ventilation

C Spiracles

D Lobed Lungs

9 Chondrichthyes use which of the following to help with bouyancy.

A oil-filled liver

B gas bladder

C swim bladder

D blubber

10 Chondrichthyes have ______________ scales.

A Placoid

B Ganoid

C cycloid

D ctenoid

11 Which of the following does NOT shed many teeth in its lifetime

A Tiger Shark

B Manta Ray

C Chimera

D Great White Shark

12 A shark with the following type of teeth most likely eats

A large fish or mammals

B small, schooling fish

C clams and bivalves

D krill and plankton

13 Cladoselache was an important chondrichthian fossil because:

A its dorsal fins were used to walk across the bottom of the ocean

B it had heterodont dentition

C it was the first example of a species with a rostrum

D it had ligamentous teeth arranged in a whorl-shape arrangement

14 True or False: The class chondrichthyes includes the largest animals to ever exist on the planet.

True

False

15 A spiracle on a sting ray is located

A near the nostrils

B behind the eyes

C in the middle of the back

D directly anterior of the caudal fin/tail

.

16 Which of the following is used to help nocturnal hunters like sharks see well even in limited light:

A melanin

B nititating membranes

C lateral line

D tapetum lucidum

17 A shark with the following type of teeth most likely eats

A large fish or mammals

B small, schooling fish

C clams and bivalves

D krill and plankton

18 Which of the following is TRUE about the feature circled on the following phylogenetic tree:

A These traits can be found only in the group Agnatha

B These characteristics can be best seen in Chondrichthyes

C These traits only apply to Myxini (hagfish)

D These traits are connected to all organisms on this chart

19 Which of the following does NOT shed many teeth throughout its lifetime

A Great White sharks (Elasmobranchii)

B Tiger sharks (aggressive)

C Greenland sharks (slow moving)

D Ghost fish (chimera)

20 Which of the following is NOT a description of squaloid sharks?

A they have relatively small brains

B they tend to live in colder waters

C their total numbers are more diverse than neoselachii

D they tend to live in deeper waters