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Worksheets

Mollusks

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.

Name the THREE groups of Mollusks.

a)

Gastropods

b)

Arthropods

c)

Cephalpods

d)

Bivalves

e)

Crab

2.

Gastropods are _______ .

a)

Single-shelled

b)

Multi-Shelled

c)

No-shelled

d)

Single-Shelled, AND No-Shelled

3.

What is a radula?

a)

A Tounge like sturcture used to scrape plant matter into easy to eat pieces.

b)

A part used to make protection.

c)

the fancy way to say "Tentacle"

d)

Movment

4.

What is this a picture of

a)

A snail

b)

A Beetle

c)

A crab

d)

A squid

e)

A seaanemone

5.

To which group of mollusks does this squid belong?

a)

cephalopod

b)

bivalve

c)

gastropod

6.

To which group of mollusks this clam belong?

a)

Gastropods

b)

Cephalopods

c)

Bivalves

d)

Arthropods

7.

To which group of mollusks this nautilus belong?

a)

Cephalopods

b)

Bivalves

c)

Gastropods

8.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
9.
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
10.

Which part of the Mollusk body contains most of the organs?

a)

Foot

b)

Visceral Mass

c)

Trochophore

d)

Mantle

11.
Which class of Mollusks have the most advanced nervous system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
arthropods
12.
What type of symmetry do Molluscs have?
a)
Asymmetrical
b)
Bilateral
c)
Radial
13.
What is the meaning of Gastropod?
a)
Soft-bodied
b)
Stomach foot
c)
Head-footed
d)
Two-shelled
14.

How do Bivalves eat?

a)

Filter feeders

b)

Radula

c)

Tentacles

d)

Beak

15.

What are filter feeders?

a)

A large pile of living organisms and the animals that live among them.

b)

An organism that attaches onto another organism and feeds off of it.

c)

Animals that feed by removing tiny bits of food from the water.

d)

Animals that use sunlight to obtain nutrients.

16.

All of the following are Bivalves, EXCEPT:

a)

Clams

b)

Mussels

c)

Snails

d)

Oysters

e)

Scallops

17.
What does hermaphrodites mean?
a)
They can be both male and female
b)
They live underground
c)
What's a hermaphrodite?
d)
They're hermits
18.
What does Cephalopod mean?
a)
means "2-shells"
b)
means "head-foot"
c)
means "stomach-foot"
d)
means "soft bodied"
19.
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
20.

What substance does bivalves secrete to form the shell?

a)

carbon calcinate

b)

Calcium carbonate

c)

carbon calcium

d)

carbonic calcinic

21.

Which is the largest group of mollusks?

a)

Cephalopods

b)

Bivalves

c)

Gastropods

d)

Gametopods

22.

How do octopuses show emotions?

a)

They change into a rock.

b)

They swim around their homes.

c)

They move their tentacles.

d)

They change their colors.

23.
Which of the following is NOT a class in phylum Mollusca?
a)
Gastropoda
b)
Bivalvia
c)
Cephalopoda
d)
Hirudinea
24.
Which mollusk class would you see organisms moving using
"jet propulsion"?
a)
Gastropoda
b)
Cephalopoda
c)
Bivlavia
d)
Oligochaeta
25.
How does a clam move?
a)
Using the radula
b)
Using the mantle
c)
Using the foot
d)
Using the gills
26.
Which of the following is the correct description of reproduction in Mollusks?
a)
Mostly asexual
b)
Budding
c)
Regeneration
d)
Mostly sexual
27.
All mollusks have an external shell.
a)
True
b)
False
28.

Which TYPE of mollusk is most intelligent?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

29.

Squids have how many tentacles?

a)

8

b)

90

c)

9

d)

10

30.

Is the only mollusks that does internal fertilization:

a)

Octupus

b)

nautilus

c)

Clams

d)

Snails