NS2-M3C6 - Life in the Seas (Exam)Page 1

Name:______Date:______

1______zooplankton:

small fish large predators

Amicro plankton

Bphytoplankton

Cpsyliaplankton

2At the shoreline, sea creatures may be exposed to life threatening extremes. How do

barnacles protect themselves?

AThey continuously emit an inky dye.

BThey attach to kelp for their lifetime.

CThey burrow in the sand during times of distress.

DThey permanently cement themselves to a surface.

3A warming of ocean surface off the western coast of South America that occurs every 4 to

12 years when upwelling of cold, nutrient-rich water does not occur. It causes die-offs of plankton and fish and creates unusual weather patterns in variousparts of the world.

AEl Niña

BLa Niño

CLa Niña

DEl Niño

4By what feature are marine animals distinguished?

Ajaws

Bcolor

Cfins

5The Marine Mammal Protection Act of 1972 prohibited U.S. citizens from hunting seals, sea

lions and walrus to save them from extinction. In 1994, after the mammal population had

increased, what changed?

AThe Act was null and void.

BU.S. citizens could hunt for food.

CFishermen could kill them if they were injured due to commercial fishing.

DU.S. citizens could kill them if Alaskan natives injured them.

NS2-M3C6 - Life in the Seas (Exam)Page 2

6Any of several usually large whales of the suborder Mysticeti, having a symmetrical skull,

two blowholes, and whalebone plates instead of teeth

ABaleen whale

BGray whale

CHumpback Whale

DKiller whale

7How many tons of fish products does the ocean yield each year?

A120,000,000 tons

B120,000 tons

C120 tons

D1,200,000 tons

8What happens to the "deep scattering layers" in the water of the sea during night?

Athey sink to the bottom

Bthey form a broad band in the middle depths

Cthey rise to the surface

9Any of numerous chiefly marine invertebrates typically having a soft, unsegmented body, a

mantle, and a protective calcareous shell. Includes the edible shellfish and the snails

AEchinoderm

BMollusk

CSponges

10The teredo worm (shipworm) is capable of doing which of the following?(Input all that

apply, then push the ENTER button.)

ABurrow into cement

BDestroy wood pilings

CWeaken stone seawalls

DDrill solid lead

ENone of the above

11Ferris suffered a bite while diving. The bite area is pale, hot, swollen and itchy. It has been

a few days and it is still irritated. What was he most likely bitten by?

ABristleworm

BSea urchin

COctopus

NS2-M3C6 - Life in the Seas (Exam)Page 3

12Doctors say pregnant women should avoid eating swordfish due to high levels of what?

Aradioactivity

Bmercury

Ciron

DNone of the above

13Which of the following are biodegradable?

(Input all that apply, then push the ENTER button.)

Awood

Bpaper

Ccotton

DNone of the above

14Self-contained underwater breathing apparatus. A portable breathing device for

free-swimming divers, consisting of a mouthpiece joined by hoses to one or two tanks of

compressed air that are strapped on the back

ASCUBA

BSnorkel

CSaturation Diving Apparatus

DSCBA

15Why is there little sea life out past the continental shelf?

AThere is little plant life to provide food.

BThe big fish living there have depleted most of the smaller species.

CGlobal warming has caused plant life to only be able to exist along the

continental shelf.

DThe El Nino effect.

16Why are reptiles usually found only in warm, tropical seas?

AReptiles are not limited to only warm, tropical seas but instead are found in

all waters of the world.

BThey are hot-blooded.

CThey only eat fish that exist in the warm, tropical areas.

DThey are cold-blooded.

NS2-M3C6 - Life in the Seas (Exam)Page 4

17Which type of sea mammals have a fine mesh sieve in their mouths and feed on plankton

and krill?

ADolphins

BKiller whales

CHumpback whales

DBaleen whales

EPorpoises

18Why is the Sargasso Sea have almost no phytoplankton?

AThere is no zooplankton for them to eat.

BThere is no upwelling in this area to provide the nutrients phytoplankton

need.

CThis area has been cleaned out of phytoplankton by baleen whales.

19What is the name of the microscopic plants that start the food chain in the seas of the

world?

APhytoplankton

BZooplankton

CNutrients

20The Navy is called upon to help eliminate oil pollution in U.S. waters by working closely with

the

ADepartment of Commerce and the Defense Mapping Agency.

BU.S. Merchant Marine and the Defense Investigative Service.

CFederal Bureau of Investigation and Army Intelligence.

DEnvironmental Protection Agency and the U.S. Coast Guard.

NS2-M3C6 - Life in the Seas (Exam)Page 5

Answer Key:NS2-M3C6 - Life in the Seas (Exam)

Question:Answer

3BD

10ABCD

11A

12B

13ABC

14A

15A

16D

17D

18B

19A

20D