class chondrichthyes

Question 1

skeleton type

Answer 1

cartilage skeleton

Question 2

body shape

Answer 2

fusiform

Question 3

tail

Answer 3

heterocercal - top lobe bigger

Question 4

gill type

Answer 4

gills w/ gill slits

Question 5

color pattern

Answer 5

countershading

Question 6

movement

Answer 6

only use caudal fin for movement - side by side motion

Question 7

scales

Answer 7

rough like sandpaper, lay together tightly like armor

Question 8

reproduction

Answer 8

some lay eggs, some are live birth, and some do both

Question 9

sense of smell

Answer 9

very good

Question 10

hearing

Answer 10

very good

Question 11

ampullae of lorenzini

Answer 11

hundreds of tiny pits in face to detect electrical impulses caused by muscle movement in water

Question 12

nictitating membrane

Answer 12

special eyelid for protection while biting

Question 13

what are the three classifications of sharks

Answer 13

shallow water, pelagic, and deep water

Question 14

shallow water sharks

Answer 14

spend lives on the continental shelf
exs. leaped, great white, nurse, reef, hammerhead, tiger, and bull

Question 15

pelagic water sharks

Answer 15

fast swimmers with a muscular body, only occasionally come close to shore
exs. mako, thresher, blue, whale, basking

Question 16

deep water sharks

Answer 16

slow swimmers, flabby body w/ a weak skeleton
exs. mega mouth, goblin, cookie cutter