Final Study Guide

Question 1

Baleen whales have one blowhole

Answer 1

False; two

Question 2

The tail of a cetacean is called a

Answer 2

fluke

Question 3

Manatees are closely related to hippopotamuses

Answer 3

False

Question 4

What is the suborder of toothed whales?

Answer 4

Odontoceti

Question 5

What is the suborder of toothless whales?

Answer 5

mysticeti

Question 6

Polar bears feed on penguins in the wild.

Answer 6

False, seals

Question 7

No other animal except mammals have _____.

Answer 7

hair or fur

Question 8

Among the pinnipeds, which has the longest maternal care called aquatic nursing strategy?

Answer 8

walruses

Question 9

All the following have one blow hole EXCEPT

Answer 9

humpback whale

Question 10

The _____ of mammals are adapted to meet their oxygen needs.

Answer 10

heart and lungs

Question 11

What is the benefit of delayed implantation and what order of marine mammals uses it?

Answer 11

To coincide birth with female’s return to breeding grounds for safe birth on the shore. Pinnipeds

Question 12

Walruses are found in both of the polar regions.

Answer 12

False

Question 13

All of the following are true about cetacean birth EXCEPT

Answer 13

Born with a well developed layer of blubber.

Question 14

All of the following are considered dolphins EXCEP

Answer 14

narwhals

Question 15

All marine mammals are carnivores.

Answer 15

false

Question 16

Ambergris is found in the digestive track of

Answer 16

sperm whales

Question 17

What is an advantage of the longer period of fetal growth in placental mammals?

Answer 17

The offspring are born larger and more mature

Question 18

The largest of the dolphin is the

Answer 18

orca

Question 19

Beluga whales and narwhals are found in the arctic ocean.

Answer 19

true

Question 20

the mammal order, Cetacea, has paddle-like forelimbs that include what organisms?

Answer 20

whale

Question 21

All of the following are characteristic of seals EXCEPT

Answer 21

external ears

Question 22

A seal is a member of the order ____________.

Answer 22

pinnipedia

Question 23

A whale is not a fish.

Answer 23

true

Question 24

Most marine mammals are high social, living in groups at least for part of their time. The exception is the

Answer 24

polar bear

Question 25

Baleen is the same composition as

Answer 25

hair and nails

Question 26

Mammary refers to:

Answer 26

glands that secrete milk for growing offspring

Question 27

Manatee and dugongs have the following characteristic:

Answer 27

blubber strictly vegetarians anterior limbs

Question 28

Do sperm whales have baleen?

Answer 28

naur

Question 29

What is one characteristic that defines mammals?

Answer 29

fur

Question 30

humpback and blue whales are examples of rorqual whales.

Answer 30

true

Question 31

What is the tail fin of a cetacean called?

Answer 31

fluke

Question 32

A paddle-like tail is a characteristic of Pinnipedia.

Answer 32

false

Question 33

What is the only cetaceans to feed on homeotherms?

Answer 33

killer whales

Question 34

Sea otters and polar bears are both in order Carnivora.

Answer 34

true

Question 35

The mammalian heart is divided into _______ chambers, or compartments.

Answer 35

4

Question 36

Killer whales primarily feed on homeotherms.

Answer 36

true

Question 37

is a tiger and bobcat an example of convergent evolution?

Answer 37

no

Question 38

Which type of pinniped species would have a higher concentration of fat and protein in their milk for nursing? One that lived in a temperate region or one in a polar region?

Answer 38

polar region

Question 39

walruses primarily feed on

Answer 39

bottom invertebrates such as clams

Question 40

The placenta helps _____.

Answer 40

nourish and protect

Question 41

When pinnipeds and cetaceans dive, gases from the compressed lungs enter the centra spaces in the lungs, such as the trachea, where little gas is absorbed by the blood. This process helps these animals avoid ______________, as they return back to the surface.

Answer 41

the bends

Question 42

whales, dolphins, and porpoises evolved from

Answer 42

land mammals that went back into the water.

Question 43

What whale is a bottom feeder?

Answer 43

grey whale

Question 44

echolocation is used by all toothed whales.

Answer 44

true