Section 19.3- The Cartilaginous Fish

Question 1

two classes of fish that have skeletons made of cartilage rather than bone

Answer 1

cartilaginous fish

Question 2

all sharks, rays, and chimaeras have

Answer 2

jaws
cartilaginous skeleton

Question 3

the skin of sharks, rays, and chimaeras is covered with toothlike scales known as

Answer 3

denticles

Question 4

generally the most feared of the creatures that roam the oceans

Answer 4

sharks

Question 5

sharks can be easily distinguished from most other fish by their

Answer 5

asymmetrical caudal fins

Question 6

one of the most maneuverable sharks

Answer 6

hammerhead sharks

Question 7

other features that make a shark different from bony fish include a

Answer 7

skeleton of cartilage
lack of swim bladder
complex reproductive system

Question 8

a notable exception that uses its stomach as a swim bladder and retains enough air in it to keep itself buoyant for hours at a time

Answer 8

sand tiger shark

Question 9

shark that lacks a swim bladder but has a very large liver that contains an oil that is lighter than water, helping to make the animal buoyant

Answer 9

whale shark

Question 10

runs along a shark’s body from snout to tail and is very sensitive to vibrations

can detect vibrations from animals in the water for great distances

Answer 10

lateral line

Question 11

the shark also brings into play one of the keenest senses of ______________ in the animal kingdom

Answer 11

smell

Question 12

the most feared of the maneaters is the

Answer 12

great white shark

Question 13

sharks also have excellent ______________

Answer 13

eyesight

Question 14

unusual fish that broad, flat bodies and generaly a long, whiplike tail

Answer 14

rays or batoids

Question 15

the two largest sharks that are plankton-eaters

Answer 15

basking shark
whale shark

Question 16

the most dangerous ray

a true ray that abounds in all the world’s seas and oceans

Answer 16

stingray

Question 17

are responsible for more injuries to people than all other types of fish combined

Answer 17

stingrays

Question 18

the most fearsome-looking ray that is nonaggressive and rarely attacks nything larger than a shrimp

Answer 18

giant manta or devilfish

Question 19

true ray reproduce by ______________ fertilization and bear _____________________

Answer 19

internal
live young

Question 20

nonvenomous rays wit long noses

Answer 20

skates

Question 21

the only rays that are oviparous

Answer 21

skates

Question 22

medium-sized fish with huge eyes and a long slender pointed tail

Answer 22

chimaeras

Question 23

short-nosed chimaeras are commonly known as

Answer 23

ratfish

Question 24

the flexible snouts of the plow-nosed chimaeras give them the common name of

Answer 24

elephant fish

Question 25

live in both salt water and fresh water

Answer 25

lampreys

Question 26

cartilaginous fish at home only in the ocean

Answer 26

hagfish

Question 27

two cartilaginous fish that have no jaws

Answer 27

lampreys hagfish

Question 28

the only cartilaginous fish that have opercula

Answer 28

chimaeras