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Marine Science

Total questions: 51

Worksheet time: 38mins

Name
Class
Date
1.
Sharks belong to a group of fish called Chondrichthyes.
a)
True
b)
False
2.
Sharks lack a swim bladder.
a)
True
b)
False
3.
How many species of sharks are there in the world?
a)
100
b)
400
c)
4000
d)
Too many to count.
4.
How many teeth does a shark have in its lifetime?
a)
500
b)
100,000,000
c)
20,000
d)
100,000,000,000
5.

Do all sharks have the same size teeth?

a)

Yes

b)

No

6.
What are the black pores used for?
a)
Electroreception
b)
Sensing vibrations
c)
Smelling
d)
Feeling
7.
What are the skeletons of sharks and rays made of?
a)
Chitin
b)
Calcium carbonate
c)
Cartilage
d)
Coldness
8.

What does the term sessile mean?

a)

Free swimming

b)

Attached to a surface

c)

Pore in side of sponge

d)

Silica or calcium internal structure in spone

9.

What is the opening on the side of the sponge called and what occurs here?

a)

Osculum- where water exits

b)

Collar cell- moves water through sponge

c)

Spicule- provides structure and support

d)

Ostia- where water enters

10.

What are these top openings in the sponge called and what happens here?

a)

Ostia- Where water enters

b)

Spicules- Provide support and structure

c)

Osculum- Where water exits

d)

Collar cells- Create current for filter feeding

11.

Which is the oral surface on this organism?

a)

A

b)

B

c)

Both because they have radial symmetry

d)

Trick question. Neither.

12.

Sponges feed by drawing water into the oscula and then filtering it out through the sponge walls.

a)

True

b)

False

13.

Cnidarians have a radially symmetrical cup or bag-like body made up of two layers of cells.

a)

True

b)

False

14.

Like jellyfish, box jellyfish can swim and feed on plankton, but are weak swimmers.

a)

True

b)

False

15.

Squid differ from cuttlefish in that they're streamined for open water living and have two tentacles that are longer than others for seizing prey.

a)

True

b)

False

16.

Sponge larvae are more animal-like than adult sponges because

a)

They are aggressive predators

b)

They are free-swimming organisms

c)

They make good pets

d)

None of the above

17.

Living marine sponges

a)

Porifera

b)

Protista

c)

Phyla

d)

Ctenophora

18.

Cnidaria

a)

Jellyfish

b)

Comb jellyfish

c)

Sponges

d)

Crabs

19.

Jellyfish, Corals, and Anemones

a)

Cnidaria

b)

Ctenophora

c)

Porifera

d)

Aneriadia

20.

Mollusca

a)

Snails

b)

Jellyfish

c)

Lobsters

d)

Crabs

21.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

22.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

23.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

24.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

25.

Which TYPE of mollusk is most intelligent?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

26.

How often do sharks eat???

a)

Every day

b)

Every few days

c)

Multiple times a day

d)

Once a month

27.

What does the biggest shark eat??

a)

Plankton

b)

Seals

c)

Humans

d)

Turtles

28.

Sharks hunt primarily by smell

a)

TRUE

b)

FALSE

29.

How do scientists determine the age of a shark?

a)

Counting their teeth

b)

They can't

c)

Measuring the shark's length

d)

Counting the rings on their vertebrae

30.

How old can some sharks get?

a)

80 years

b)

100 years

c)

500 years

d)

750 years

31.

Sharks have what kind of skeleton?

a)

They don't have one

b)

Bone

c)

Cartilage

d)

Silica

32.

Shark skin is smooth

a)

TRUE

b)

FALSE

33.

Sharks have eyelids

a)

TRUE

b)

FALSE

34.

How do sharks sense electromagnetic fields?

a)

Their teeth

b)

Lateral line

c)

Ampullae of Lorenzini

d)

Their nose

35.

Sharks have a trance-like state called tonic immobility

a)

TRUE

b)

FALSE

36.

which shark lived around the time of the dinosaurs?

a)

tiger shark

b)

Megalodon

c)

bull shark

d)

cookie cutter shark

37.

which two sharks are most common to attack humans?

a)

bull shark

b)

hammer head

c)

tiger shark

d)

sand shark

38.

Which of the labeled arrows is pointing to the NOSTRILS?

a)

A

b)

B

c)

C

d)

D

39.

Which of the labeled arrows is pointing to the PECTORAL FIN?

a)

A

b)

B

c)

C

d)

D

e)

E

40.

Which of the labeled arrows is pointing to the CAUDAL FIN?

a)

A

b)

B

c)

C

d)

D

e)

E

41.

Which of the labeled arrows is pointing to the CLASPERS?

a)

A

b)

B

c)

C

d)

NONE

42.

Which of the following is a way that sharks control their buoyancy?

a)

Having a large oily liver

b)

Gulp air

c)

Large pectoral fins

d)

All are correct

43.

Which type of shark birthing technique is most similar to that of humans? (hint: belly button/umbilical cord)

a)

Viviparous

b)

Ovoviviparous

c)

Oviparous

d)

None are correct

44.

Why must sharks continually swim?

a)

To work out their muscles

b)

To keep their heart pumping

c)

In order to get oxygen thru their gills

d)

To attract mates

45.

What is the name of the internal structure that controls a bony fish's depth in the water?

a)

Liver

b)

Air Pocket

c)

Lung Bladder

d)

Swim Bladder

46.

Lampreys and hagfish lack

a)

teeth

b)

heads

c)

mouths

d)

jaws

47.

This is the organ where gas exchange occurs in fish.

a)

Gills

b)

Lungs

c)

Heart

d)

Operculum

48.

Which of the following fish would NOT belong to Class Chondrichthyes?

a)

Shark

b)

Salmon

c)

Skate

d)

Ray

49.
According to this evolutionary tree, birds are LEAST related to: 
a)
Amphibians
b)
Sharks
c)
Ray Finned Fish
d)
Crocodiles
50.

This shark can be found far inland in brackish or fresh water.

a)

bull

b)

tiger

c)

mako

d)

hammerhead

51.

This shark is the most long lived vertabrate, well over 500 years.

a)

Iceland

b)

Greenland

c)

Great white

d)

megladon

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