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Planet Earth: Ocean Deep

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

I am the largest fish in the ocean, weighing in at 3 tons. What am I?

a)

whale shark

b)

great white shark

c)

oceanic white tip shark

d)

spotted manta ray

2.

What producers are the basis of the food chain in the ocean?

a)

zooplankton

b)

marine snow

c)

plankton

d)

algae

3.

I have a strong sense of taste and patrol the ocean for food. What am I?

a)

whale shark

b)

great white shark

c)

oceanic white tip shark

d)

spotted manta ray

4.

For many marine organisms, food is scarce. Why do they have different adaptations to help the hunt and gather food?

a)

to decrease competition with other organisms

b)

to increase their population's genetic diversity

c)

to conserve their body's energy

d)

to find a better, more suitable mate

5.

How do dolphins find and capture their food in the open ocean?

a)

they use their night vision to locate and trap prey

b)

they work with sharks to force schools of fish into groups

c)

they herd fish into shallow water hydroplane along the shore's edge

d)

they travel in large groups and herd fish to the surface

6.

I can dive up to 20 meters in the ocean to catch fish. What am I?

a)

Open sea pigeon

b)

Cory's shearwater

c)

Giant sea gull

d)

Swimming gull

7.

Which of the following is an adaptation that allows me to gather food?

a)

camouflage

b)

projections around my mouth

c)

a long, spiked tail with venom

d)

several rows of sharp teeth

8.

As you travel from the shallow seas to the deep ocean, which of the following occurs?

a)

temperature increases

b)

temperature decreases

c)

pressure increases

d)

pressure decreases

9.

At what depth does the aphotic zone begin?

a)

50 meters

b)

250 meters

c)

500 meters

d)

1,000 meters

10.

Plankton isn't present in the aphotic zone, so what supports the food chains here?

a)

algae

b)

zooplankton

c)

marine bacteria

d)

marine snow, or detritus

11.

I have feathered legs that help me to capture food and prevent me from sinking. What am I?

a)

ocean tarantula

b)

gliding arachnid

c)

marine centipede

d)

sea spider

12.

I move by flapping my fins instead of using jet propulsion. What am I?

a)

glowing octopus

b)

swimming jellyfish

c)

vampire squid

d)

dumbo octopus

13.

I glow when pursued by a predator with the help of bacteria. What am I?

a)

glowing octopus

b)

umbrella squid

c)

venomous octopus

d)

vampire squid

14.

At the ocean floor, you experience ______ times the pressure you do at the surface.

a)

50

b)

500

c)

300

d)

1,000

15.

I can cleverly blend in with the sand around me, and lure prey with the appendage on my head. What am I?

a)

monkfish

b)

sand stingray

c)

flat anglerfish

d)

sea urchin

16.

Which of the following is NOT considered a scavenger of the ocean floor?

a)

eel

b)

crab

c)

isopods

d)

shrimp

17.

What important role do scavengers play in the ocean?

a)

They eat extra plankton that other organisms are unable to consume

b)

They breakdown dead matter that has sunk from the surface

c)

They utilize bioluminescence to find rare food sources

d)

They dig holes to bury dead matter that is inedible for other organisms

18.

I grow faster than any other marine invertebrate, growing up to 3 meters. What am I?

a)

flatworm

b)

sea kelp

c)

tubeworm

d)

parasitic anemone

19.

What adaptation does a nautilus have that allows it to control its depth in the ocean?

a)

sensitive tentacles

b)

flotation chambers

c)

large fins

d)

flexible tail

20.

Which of the following correctly describes the relationship between the mola mola and the butterfly fish?

a)

parasitism

b)

mutualism

c)

commensalism

d)

predation

21.

Why would its light body weight be an advantage for the frigate bird?

a)

It is able to soar over water for weeks without using a lot of energy.

b)

It is able to quickly escape from predators.

c)

It is able to herd with other frigate birds and decrease competition.

d)

It is able to find small islands suitable for mating and nesting.

22.

I grow up to 3 meters long and can change color when communicating with other members of my species. What am I?

a)

swordfish

b)

sharp-billed eel

c)

silver hunting fish

d)

sailfish

23.

How many krill can a blue whale consume in one day?

a)

4 million

b)

20 million

c)

200,000

d)

1 million

24.

How much of the blue whale population still exists?

a)

50%

b)

80%

c)

20%

d)

3%

25.

David Attenborough finishes the episode by saying "We can ____________ or we can ____________--the choice is ours."

a)

destroy; cherish

b)

build; tear down

c)

learn; wait

d)

change; harm