Marine Mammals

Question 1

True or False: Marine mammals are quite intelligent compared with other marine animals

Answer 1

True

Question 2

Their bodies contain materials that are commercially valuable to humans

Answer 2

Marine mammals

Question 3

What is the class of marine mammals?

Answer 3

Class Mammalia

Question 4

True or False: mammals are homeothermic

Answer 4

True

Question 5

True or False: marine mammals have low parental care

Answer 5

False; high parental care

Question 6

True or False: marine mammals have high metabolic rate

Answer 6

True

Question 7

What is the scientific name for Sea otters

Answer 7

Enhydra lutris

Question 8

What order does sea otters belong to?

Answer 8

Order Carnivora

Question 9

Where are Sea otters usually found?

Answer 9

Coast of California
Aleutian Islands of Alaska

Question 10

they have short, erect ears, five-fingered forelimbs and well-defined hind limbs with finlike feet

Answer 10

Sea otters

Question 11

they contain thick fur whereas they have 350,000 hairs per square inch

Answer 11

sea otters

Question 12

How many hairs per square inch does sea otters have?

Answer 12

350,000

Question 13

How many hairs per square inch does humans have?

Answer 13

100,000

Question 14

How many hair does the sea otter have in a 10 cm x 10 cm square?

Answer 14

5.6 million hairs (hair in heads of 48 people)

Question 15

The coating of hairs is so dense that the animal’s skin stays dry even when underwater, thus decreasing heat loss?

Answer 15

sea otters

Question 16

Sea otters favor the areas around _ and _, where they spend most of their time floating lazily on their back

Answer 16

coastal reefs and kelp beds

Question 17

How many pup does female sea otters normally give birth on shoreline rocks?

Answer 17

One

Question 18

remarkable for their use of a tool, a rock for crushing sea urcchins and molluscs

Answer 18

California sea otter

Question 19

They have a large appetite and consume nearly 25% of their body weight in food per day

Answer 19

Sea otters

Question 20

How many percent of food of the sea otter’s body weight do they consume per day?

Answer 20

25%

Question 21

What is the vulnerability faced by sea otters?

Answer 21

They are killed for their fur (used as coats)

Question 22

Top predator in marine food
chains in the Arctic region

Answer 22

Polar bear

Question 23

What is the length that adult male polar bears reach?

Answer 23

3 meters (9.9 feet)

Question 24

How much weight does an adult male polar bear averagely have?

Answer 24

725 kilograms (1595 pounds)

Question 25

How many layer of fat lies beneath the bear''s black skin for insulation?

Answer 25

4-inch layer of fat

Question 26

True or False: Polar bears have dense layer of underfur

Answer 26

True

Question 27

How many miles can the polar bear swim without resting?

Answer 27

60 miles

Question 28

True or False: Polar bears are solitary animals

Answer 28

True

Question 29

Eat birds and walrus pups, their primary food is seal

Answer 29

Polar bear

Question 30

how many percent of the bear's body weight can it eat?

Answer 30

10% in 30 mins

Question 31

How many kilograms of food can a big male polar bear eat?

Answer 31

70kg

Question 32

When does polar bears mate?

Answer 32

spring

Question 33

True or False: Females with cubs can mate

Answer 33

False; Females with cubs do not mate, and cubs will stay with their mothers for almost 3 years

Question 34

True or False: number of available breeding females is usually limited

Answer 34

True

Question 35

When are the polar bear cubs born?

Answer 35

bet November and Early January

Question 36

How many cubs does polar bears usually produce?

Answer 36

Two cubs weighing about 1 pound each

Question 37

What are some examples of Pinnepids

Answer 37

Seals Sea Lions Walruses

Question 38

What is the order of Pinnepids

Answer 38

Pinnepedia

Question 39

They have paddle shaped flippers for swimming but still need to rest and breed on land

Answer 39

Pinnepids

Question 40

Evolved from an early form of terrestrial carnivore (order Carnivora), which includes cats, dogs, bears, and their kin

Answer 40

Pinnepids

Question 41

True or False: Pinnepids are herbivores

Answer 41

False; carnivores that feeds on fish and squid

Question 42

What part of the pinnepids are adapted for swimming?

Answer 42

streamlined bodies

Question 43

What part of the pinnepids are added for protection against the cold?

Answer 43

Pinnepids

Question 44

They are well adapted to the marine environment, with torpedo-shaped bodies and limbs modified to form flippers

Answer 44

Pinnepids

Question 45

They have visible external ears and long necks. They also have front flippers that rotate backward and rear flippers that can be moved forward to better support the animal's body weight as they move on land

Answer 45

Eared seals

Question 46

They lack internal ears, have short necks, and have front and rear flippers that cannot be rotated and thus make movement on land awkward

Answer 46

True seals (phocids)

Question 47

largest group of pinnepids

Answer 47

Seals

Question 48

How many species does seals have?

Answer 48

19 species

Question 49

True or False: The rear flippers of seals cannot be moved forward

Answer 49

True

Question 50

On land they must move by pulling themselves along with their front flippers

Answer 50

Seals

Question 51

swim with powerful strokes of the rear flipper

Answer 51

seals

Question 52

breed on the Pribillof Islands of Alaska

Answer 52

Northern Fur Seals

Question 53

The males arrive first and establish territories on the beach, when the females arrive, males will collect a harem of as many as 15 to 20 cows with which they will mate.

Answer 53

Northern Fur Seals

Question 54

Whar is the scientific name of Northern Fur Seals?

Answer 54

*Collorhinus ursinus*