13D

Question 1

Family odobenidae

Answer 1

1) competition (walruses)
2) Defense (predators)
3) Hauling out (pick axe)
4) Resting (anchor)

Question 2

Order Sirenia

Answer 2

paddle shaped tail, freshwater/estuarine

fluke shaped tail, marine; has tusks

Question 3

Sirenians

Answer 3

mammals belonging to order sirenia

Question 4

Tail Flukes

Answer 4

are the lobes of sirenian or cetacean tail

Question 5

Family Dugongidae

Answer 5

dugong
steelers sea cow

Question 6

Cetaceans

Answer 6

marine mammals belonging to order cetacea; includes whales, dolphins, and porpoises

Question 7

Blowhole

Answer 7

opening of the tip of cetaceans that contains the nostrils

Question 8

Blubber

Answer 8

thick’s uniform layer of fat under the skin of some marine mammals (pinnipeds, sirenians, cetaceans)

Question 9

Alveoli

Answer 9

tiny spaces, or gas sacs, within the lungs where gas exchange occurs

Question 10

The Bends

Answer 10

nitrogen gas dissolved in the blood comes out of solution and forms gas bubbles as the pressure decreases during an ascent from deep water, causing disruptions in circulation

Question 11

Myoglobin

Answer 11

protein muscle that store’s oxygen

Question 12

Lactic Acid

Answer 12

waste product produced when ? lose anaerobically

Question 13

Spy Hopping

Answer 13

cetacean behavior in which the animal raises its head out of the water

Question 14

Breaching

Answer 14

cetacean behavior in which an animal completely or almost completely leaves the water

Question 15

Tail slapping

Answer 15

cetacean behavior in which animals lift its tail out of the water and slaps it down hard on the surface

Question 16

Peduncle

Answer 16

part of the whales body closest to the tail fluke

Question 17

Fluke Up

Answer 17

cetacean behavior in which the animal brings its fluke above the water so that the ventral surface is visible

Question 18

Fluke down

Answer 18

cetacean behavior in which the animal beings it’s fluke above the water do that the dorsal surface is visible

Question 19

Flipper Flapping (Pec Slapping)

Answer 19

cetacean behavior in which the animal rolls over onto its back and flaps it’s flipped in the air

Question 20

Pectoral Stroking

Answer 20

cetacean behavior in which one animal stokes the body of another with its pectoral fin

Question 21

Types of Whales

Answer 21

Suborder Mysticeti: baleen whales (12-14 species)
Suborder Odontoceti: toothed whales, dolphins porpoises (75 species)

Question 22

baleen whales

Answer 22

lack teeth
presence of baleen plates
two external blowholes

Question 23

Baleen

Answer 23

structure made of protein that is used by baleen whales to filter foo from the water

Question 24

Keratin

Answer 24

tough protein that makes up baleen

Question 25

right whales

Answer 25

northern, southern, bowhead

Question 26

family balaenopteridae

Answer 26

blue, fin, sei, brydes, minke, eden, antarctic, omura, humpback

Question 27

toothed whales are characterized by

Answer 27

teeth echolocation one external blowhole

Question 28

family ziphiidae

Answer 28

relatively poorly known characterized by a snout drawn into a beak

Question 29

family physeteridae

Answer 29

sperm whale

Question 30

Spermaceti

Answer 30

waxy substance found within the rostrum of sperm whales

Question 31

Ambergris

Answer 31

section of the sperm whales digestive tract; base of perfumes

Question 32

family kogiidae

Answer 32

pygmy sperm, dwarf sperm

Question 33

family platanistidae

Answer 33

asian river dolphin long, narrow beak, numerous pointed teeth and broad paddle like flippers

Question 34

family pontoporiidae

Answer 34

franciscana rivers of south africa

Question 35

family iniidae

Answer 35

bouto amazon river, freshwater, reduced eyes

Question 36

Dephinids

Answer 36

collective term for members of the cetacean family Delphinidae, specifically dolphins

Question 37

family phocoenidae

Answer 37

finless, spectacled, butmeister, vaquita, dalis porposes

Question 38

family monodontidae

Answer 38

narwhal and beluga

Question 39

Baleen whale families

Answer 39

balaenidae (right) balaenopteridae(rorquals) eschrictiidae(gray) neobalarnidae(pygmy right)

Question 40

family lipotidae

Answer 40

baiji chinese river long narrow upturned beak and low triangular dorsal fin

Question 41

echolocation

Answer 41

process that allows toothed whales to use sound to distinguish objects from a distance