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Mollusca Review

Total questions: 50

Worksheet time: 12hrs 33mins

Name
Class
Date
1.
Which group of Molluscs does the picture belong to?
a)
Gastropod
b)
Bivalve
c)
Cephalopod
2.
What Mollusc group does the snail belong to?
a)
Gastropod
b)
Bivalve
c)
Cephalopod
3.
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
4.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
5.
What type of body do all Mollusks have?
a)
Segmented
b)
Soft
c)
Rigid
d)
Clear
6.
What are the major groups of Mollusks?
a)
Cnidarians, Gastropods, Porifera
b)
Gastropods, Bivalves, Cephalopods
c)
Porifera, Cephalopods, Cnidarians
7.
Mollusk's tongue-like strip covered with teeth that point backward is called the ____
a)
trochopore
b)
radula
c)
gills
d)
visceral mass
8.
All gastropods have shells
a)
true
b)
false
9.

Cephalopod means what?

a)

Slimy foot

b)

Stomach foot

c)

Head foot

d)

Squid

10.

Gastropod means what?

a)

Slimy foot

b)

Stomach foot

c)

Snail

d)

Head foot

11.

Which class of mollusks is the only one that can be found on land?

a)

Bivalves

b)

Polyphacophora

c)

Cephalopods

d)

Gastropods

12.

What specific feature is only found on cephalopods?

a)

Gills

b)

Tentacles

c)

Siphon

d)

Head

13.
Octopuses can change colors to match their environment. 
a)
True
b)
False
14.

In the shell-shocked lab, we learned that thick walls, protrusions, high spires and other features in Class Gastropoda likely evolved because:

a)

they provided a feeding advantage over other species of gastropods.

b)

female snails preferred the features in males, and this drove the evolution of these traits.

c)

predator numbers increased and these features protected the gastropods.

d)

the wizard Merlin cast a spell on the gastropods that had them develop these traits.

15.

True or False - All molluscs have an open circulatory system, where blood goes into the body cavity.

a)

True

b)

False

16.

Which TYPE of mollusk has two shells?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

17.

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.

18.

Bivalves have a(n) __ circulatory system

a)

Closed

b)

Open

19.

Which is NOT true of bivalves?

a)

coelomate

b)

triploblastic

c)

cephalization

d)

use gills for gas exchange

20.

Identify the item marked at location 1.

a)

Arm

b)

Tentacle

c)

Radula

d)

Sucker

21.

Identify the item marked at location 3.

a)

Ink Sac

b)

Gills

c)

Siphon

d)

Mantle

22.

Identify the item marked at location 4.

a)

Intestine

b)

Stomach

c)

Heart

d)

Ink Sac

23.

Identify the item marked at location 5.

a)

Gills

b)

Heart

c)

Gal Bladder

d)

Radula

24.

Identify the item marked at location 7.

a)

Skin

b)

Shell

c)

Mantle

d)

Esophagus

25.

How many hearts does a squid have?

a)

1

b)

2

c)

3

d)

4

26.

Which cephalopod has two triangle fins on their mantle?

a)

Cuttlefish

b)

Squid

c)

Octopus

d)

Nautilius

27.

Which cephalopod would be considered the most intelligent

a)

cuttlefish

b)

octopus

c)

squid

d)

nautilus

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 part of the Mollusk body secretes (makes) the shell?

a)
Mantle
b)
Trochophore
c)
Foot
d)
Visceral Mass
31.

Which class includes the chitons?

a)

Gastropoda

b)

Bivalvia

c)

Cephalopoda

d)

Polyplacophora

32.

Which part of the mollusk contains the body organs?

a)

Foot

b)

Mantle

c)

Visceral mass

d)

Radula

33.

Which is the most advanced mollusk?

a)

Bivalve

b)

Cephalopod

c)

Gastropod

d)

Polyplacophoran

34.

Which mollusk has a closed circulatory system?

a)

Bivalve

b)

Cephalopod

c)

Gastropod

d)

Polyplacophoran

35.

Which mollusk undergoes jet propulsion?

a)

Gastropod

b)

Bivalve

c)

Cephalopod

d)

Polyplacophoran

36.

Which cephalopod has an external shell for buoyancy?

a)

Nautilus

b)

Cuttlefish

c)

Squid

d)

Octopus

37.

Which cephalopod is more torpedo-shaped and found out in the open ocean?

a)

Nautilus

b)

Cuttlefish

c)

Squid

d)

Octopus

38.

Which cephalopod is shown?

a)

Nautilus

b)

Cuttlefish

c)

Squid

d)

Octopus

39.

Which cephalopod is shown?

a)

Nautilus

b)

Cuttlefish

c)

Squid

d)

Octopus

40.
The pigment cells in many cephalopods that help with camouflage are called
a)
odontophores
b)
chromatophores
c)
pinacocytes
d)
melanocytes
41.
This molluscan is a member of 
a)
Superorder Decapodiformes
b)
Superorder Octopodiformes
c)
Subclass Nautiloidea
d)
Class Polyplacophora
42.

Name the class pictured

a)

Scaphopoda

b)

Aplacophora

c)

Bivalvia

d)

Gastropoda

43.

Select all that apply to the bivalve clam you dissected:

a)

Open circulatory system

b)

Filter-feeder

c)

Internal pen, secreted by the mantle.

d)

Beak used for eating.

44.

Select all that apply to the squid you dissected:

a)

Open circulatory system

b)

Filter-feeder

c)

Internal pen, secreted by the mantle.

d)

Beak used for eating.

45.

In the shell-shocked lab, you analyzed these graphs. Which group is having the biggest impact on the others?

a)

The burrowing clams

b)

The cephalopods

c)

The gastropods

d)

The shell breaking predators

46.

Why did the clam and the squid have so many similarities?

a)

The similarities area a result of convergent evolution.

b)

The similarities are a coincidence.

c)

The similarities are from a common ancestor.

47.

What is the name of this location on the shell of the clam?

a)

Umbo

b)

Foot

c)

Mouth

d)

Mollusc

48.

What is the function of this structure?

a)

Making Sperm + Eggs

b)

Digestion

c)

Closing and opening clam

d)

Gas exchange (breathing)

49.

What is the function of this structure?

a)

Making Sperm + Eggs

b)

Digestion

c)

Closing and opening clam

d)

Gas exchange (breathing)

50.

What is the function of this structure?

a)

Making Sperm + Eggs

b)

Making the Shell

c)

Closing and opening clam

d)

Moving food into mouth

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