Unit #9 Quiz #2 2012-2013

Grade:«grade»

Subject:Aquatic Science

Date:«date»

1 The two groups of whales are

A baleen & toothed

B baleen & cetacean

C toothed & cetacean

D cetacean& pinniped

2 Mammals have a _______ chambered heart.

A 2

B 3

C 4

D 5

3 Which order of mammals has made the most complete transition to aquatic life

A Carnivora

B Cetaceans

C Edentata

D Pinnipeds

4 Polar bears can be found in the __________ region(s)

A Antarctic

B Temperate

C Equatorial

D Arctic

5 Dugongs can be found near:

A Florida

B New England

C West Africa

D Australia

6 Sea otters were hunted near extinction because:

A Sea otters were considered pest near aquaculture farms

B Sea otters have the most dense hair of any known animal

C Sea otters lost most of their habitat due to kelp farming

D Sea otters lost their major food souce (sea urchins) due to pollution

7 Sea otters and polar bears are in which of the following orders:

A Carnivera

B Pinneped

C Cetacean

D Serinia

8 All of the following are true when comparing seals and sea lions, EXCEPT:

A Sea lions have external ears

B Anterior legs of seals are not useful for walking

C Seals have external ears

D Anterior legs of sea lions are useful for walking on land

9 Sea otters are considered a capstone/keystone species. This means:

A without this species the ecosystem will become destabilized

B this species is responsible for keeping the bottom of the food chain stable

C this species is considered an apex predator

D as this species grows in population size, so does the overall population of the food chain

10 Which of the following is a Cetacean?

A polar bear

B dolphin

C seal

D sea lion

11 Cetaceans (dolphins/whales) look a lot like chondrichthyes, these similar structures are

A homologous

B evolutionary

C analogous

D caudal fins

12 All of the following are characteristics of Pinnepeds, EXCEPT:

A They have the most dense fur of any mammal

B They are predominately carnivores

C They are streamline and excellent swimmers

D Examples of pinnepeds are seals, sea lions, and walruses

13 Which species is the largest (physically) of Pinnepeds

A seals

B dolphins

C walruses

D sea lions

14 All of the following help cetaceans maintain their body temperature in cold waters, EXCEPT:

A large amounts of blubber

B dense hair for insulation

C high metabolic rates

D counter current blood flow

15 All of the following are true when considering sea otters, EXCEPT:

A they have the most dense fur of any mammal

B they are known for their use of tools

C they are territorial

D they use blubber to keep themselves warm and afloat

16 A baleen is/are

A large oval teeth

B an organ used for echolocation

C large, flat teeth for chewing plants

D a series of fibrous plates

17 Which of the following is a Pinneped

A sea lion

B dolphin

C polar bear

D otter

18 A walrus uses which of the following to detect the presence of bivalves in the sand

A Tusks

B Teeth

C Whiskers

D Front flippers with vestigial nails

19 The root of the word mammal comes from the fact that mammals have

A more than 3 chambers in their heart

B fur that covers most of their bodies

C the ability to give live birth

D mammory glands

20 All of the following countries still participate in whaling, EXCEPT:

A Japan

B Norway

C New Zealand

D Faroe Island

21 All of the following are characteristics of mammals, EXCEPT:

A They are viviparous

B They nurse their young

C They are ectothermic

D They all have hair/fur at some point in their lives