Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Phylum Mollusca REVIEW

Total questions: 33

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

Found across several Classes in Phylum Mollusca, what is the ribbon of modified teeth used for feeding and grazing called?

a)

ARISTOTLE'S LANTERN

b)

RADULA

c)

MANTLE

d)

ADDUCTOR

2.

What are the three main parts/sections of a Gastropod's coiled shell?

a)

umbo

b)

apex

c)

spire

d)

body whorl

e)

operculum

3.

What is the oldest part of the shell called?

a)

spire

b)

umbo

c)

operculum

d)

papillae

4.

What is the name of the muscle that holds a Bivalve shell together?

a)

abdominal

b)

adductor

c)

siphon

d)

foot

5.

What are the hair-like structures that secure mussel species to a substrate?

a)

chitin

b)

spire

c)

cirri

d)

byssal threads

6.

A gastropod that does not have a shell is known as a?

a)

chiton

b)

squid

c)

nudibranch

d)

pedalia

7.

Structures used to pull water in and push water out of animals in Phylum Mollusca are called?

a)

siphon

b)

radula

c)

operculum

d)

spire

8.

Calcium carbonate structure found on the muscular foot in Gastropods that secures the animal inside of its shell. Protects the animal and keeps it from drying out. The "trap door"

a)

operculum

b)

valve

c)

foot

d)

body whorl

9.

Skin cells that contain pigment to provide protective coloration in Cephalopoda are called?

a)

chromatin

b)

chromatophores

c)

chromium

d)

chitin

10.

What is the meaning of Gastropod?

a)

Soft-bodied

b)

Belly foot

c)

Head-footed

d)

Two-shelled

11.

Most molluscs have what type of symmetry?

a)

Radial

b)

Bilateral

c)

Asymmetry

d)

No symmetry

12.

What is a unique feature only found on cephalopods?

a)

Gills

b)

Tentacles

c)

Siphon

d)

Head

13.

The protective shell of a mollusc...

a)

is secreted by the mantle.

b)

Grows from the end of the mollusk foot.

c)

Is constantly replaced by bigger shells as the mollusk grows.

d)

forms when the mollusk reaches adulthood.

14.
How many overlapping plates make up a chiton's shell?
a)
7
b)
10
c)
6
d)
8
15.
What is the radula used for?
a)
Locomotion
b)
Feeding
c)
Swimming
d)
Digging
16.

Which TYPE of mollusc has two shells?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

d)

Polyplacophora

17.

Which TYPE of mollusc has ONE or NO shell?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

d)

Polyplacophora

18.

Which class of Molluscs includes squid, cuttlefish, and octopus?

a)

Gastropods

b)

Bivalves

c)

Cephalopods

d)

Polyplacophora

19.

Which part of the Mollusc body is specialized for burrowing, and locomotion?

a)

siphon

b)

visceral mass

c)

mantle

d)

foot

20.
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.
21.

Which group of cephalopods has the ability to flatten the body to fit in small spaces and change skin to blend with surroundings?

a)

Cuttlefish

b)

Nautilus

c)

Squid

d)

Octopuses

22.

Which structure makes the valve?

a)

Mantle

b)

Visceral mass

c)

Inhalant siphon

d)

Gills

23.

Tentacles are modified versions of the

a)

Foot

b)

Visceral mass

c)

Head

d)

Mantle

24.

The word Mollusca means

a)

Soft body

b)

Many forms

c)

Stinging cells

d)

Porous skin

25.

What substance are pearls made of?

a)

Nacre

b)

Calcium

c)

Sodium

d)

Silicate

26.

What is the function of the chromatophores on the mantle of squid, octopus, and cuttlefish?

a)

Secreting the shell

b)

Stinging prey

c)

Camouflage

d)

Move water over gills

27.

What skin enhancement is used to change the texture in a cephalopod and aid it in protection.

a)

chromatophore

b)

papillae

c)

ink

d)

radula

28.

In which class would you find this animal?

a)

bivalvia

b)

gastropoda

c)

polyplacophora

d)

cephalopoda

29.

In which class would you find this animal?

a)

bivalvia

b)

gastropoda

c)

polyplacophora

d)

cephalopoda

30.

In which class would you find this animal?

a)

bivalvia

b)

cephalopoda

c)

polyplacophora

d)

gastropoda

31.

In which class would you find animals that created these shells?

a)

bivalvia

b)

gastropoda

c)

polyplacophora

d)

cephalopoda

32.

What are the organs on a nudibranch back that functions as a gill and as a defensive weapon with nematocysts from consumed cnidaria?

a)

siphuncle

b)

cerata

c)

hemocyanin

d)

spire

33.
Which of these cephalopods has an external shell?
a)
cuttlefish
b)
squid
c)
octopus
d)
nautilus