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Phylum Mollusca

Total questions: 43

Worksheet time: 37mins

Name
Class
Date
1.
The part of the mollusk that produces its shells is the ______. 
a)
cavity
b)
mantle
c)
visceral mass
d)
ventral foot
2.
Gastropoda, Bivalva, Cephalapoda are all classes within the Phylum _______. 
a)
Arthropoda
b)
Mollusca
c)
Porifera 
d)
Cnidaria
3.
Mollusk's tongue-like strip covered with teeth that point backward is called the ____
a)
trochopore
b)
radula
c)
gills
d)
visceral mass
4.
Radula is used to _________. 
a)
scrape food from surfaces
b)
regulate water flow
c)
digest food
d)
gas exchange
5.
What type of body do all Mollusks have?
a)
Segmented
b)
Soft
c)
Rigid
d)
Clear
6.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
7.
What type of gastropod is pictured? 
a)
tulip snail
b)
cowry snail
c)
abalone
d)
nudibranch
8.

This is a

a)

blue dragon nudibranch

b)

man o war

c)

blue sponge

9.

Dangerous gastropod with a powerful venom and painful barbed stinger

a)

abalone

b)

giant conch snail

c)

cone snail

d)

nudibranch

10.

Which group of gastropods can "steal" the stinging cells from cnidarians and store them in their own epithelial tissues in order to defend itself from predators?

a)

nudibranches

b)

conch snail

c)

all snails

d)

cone snail

11.

Which specie of mollusc does not have a shell?

a)

snail

b)

limpet

c)

conch

d)

slug

12.

Which part of the Mollusc body is specialised for burrowing, feeding, and movement?

a)

trochophores

b)

visceral mass

c)

mantle

d)

foot

13.
All gastropods have shells
a)
true
b)
false
14.

What is the meaning of Gastropod?

a)

Soft-bodied

b)

Stomach-footed

c)

Head-footed

d)

Two-shelled

15.
Which part of the Mollusk body is the tissue covering the body and secretes the shell?
a)
Mantle
b)
Trochophore
c)
Foot
d)
Visceral Mass
16.
What type of circulatory system do most Molluscs have?
a)
Open
b)
Closed
17.

Which animal does NOT catch its prey with the help of a sharp, barbed harpoon-like structure?

a)

jellyfish

b)

cone snails

c)

ribbon worms

d)

sponges

18.

Geographic cone snails are deadly to humans.

a)

True

b)

False

19.

Nudibranches can eat jellies because they

a)

are immune the to the toxins

b)

have a mucus coating on their esophagus so they don't get stung

c)

trick question, they don't eat jellyfish

d)

have really thick armor that stinging cells can't penetrate

20.

Cone snails can modify the toxins they use when stinging based on the type of animal they are going to attack

a)

True

b)

False

21.

What is the name of the structure that opens and envelops an entire fish when a cone snail is eating?

a)

radula

b)

foot

c)

hood

d)

funnel

22.

What is this?

a)

nudibranch

b)

geographic cone snail

c)

giant conch snail

d)

hermit crab

23.

Complete the saying. "If it's a cone, ..."

a)

give it a home

b)

hand it the phone

c)

leave it alone

24.
What is the radula used for?
a)
Locomotion
b)
Feeding
c)
Swimming
d)
Digging
25.
All mollusks have an external shell.
a)
True
b)
False
26.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

27.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

28.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

29.

What TYPE of mollusk is this?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

30.

Which TYPE of mollusk is most intelligent?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

31.

Which TYPE of mollusk has two shells?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

32.

Which TYPE of mollusk has ONE or NO shell?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

33.
What does Cephalopod mean?
a)
means "2-shells"
b)
means "head-foot"
c)
means "stomach-foot"
34.
Which class of Mollusks include squid, cuttlefish and octopus?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
Polyplacophora
35.
Which class of Mollusks have a closed circulatory system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
All of the classes
36.
Cephalopods move by
a)
using jet propulsion
b)
waving their tentacles back and forth.
c)
crawling along on a single muscular foot.
d)
clapping their shells together.
37.
Which group of cephalopods has ability to flatten body to fit in small spaces and change skin to blend with surroundings?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
38.
What is the meaning of Gastropod?
a)
Soft-bodied
b)
Stomach foot
c)
Head-footed
d)
Two-shelled
39.
Which class of Molluscs include clams, scallops, and mussels?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
40.
What are the major groups of Mollusks?
a)
Cnidarians, Gastropods, Porifera
b)
Gastropods, Bivalves, Cephalopods
c)
Porifera, Cephalopods, Cnidarians
41.
Structures on cephalopods that act as a water pump for jet propulsion are called 
a)
siphons
b)
gills
c)
radulas
d)
trochopores
42.
The cells in skin of cephalopods that allow them to change colors are called
a)
pigmentocytes
b)
chromatophores
c)
dermatophores
d)
branchiocytes
43.

Which cephalopod is shown?

a)

Nautilus

b)

Cuttlefish

c)

Squid

d)

Octopus

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