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Phylums Mollusca & Echinodermata

Total questions: 35

Worksheet time: 20mins

Name
Class
Date
1.

Mollusks have

a)

bilateral symmetry

b)

radial symmetry

c)

no symmetry

2.

To which group of mollusks does this squid belong?

a)

cephalopod

b)

bivalve

c)

gastropod

3.

To which group of mollusks this clam belong?

a)

Gastropods

b)

Cephalopods

c)

Bivalves

d)

Arthropods

4.

Which is the group of mollusks that has a spiral-shaped shell?

a)

Gastropods

b)

Cephalopods

c)

Myriapods

d)

Bivalves

5.

To which group of mollusks this octopus belong?

a)

Cephalopods

b)

Gastropods

c)

Bivalves

6.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
7.

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

a)

Foot

b)

Visceral Mass

c)

Trochophore

d)

Mantle

8.

To which group of mollusks this nautilus belong?

a)

Cephalopods

b)

Bivalves

c)

Gastropods

9.

Which part of the Mollusk body is the tissue covering the body and secretes the shell of bivalves and other shelled mollusks?

a)
Mantle
b)
Trochophore
c)
Foot
d)
Visceral Mass
10.
Which class of Mollusks have the most advanced nervous system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
arthropods
11.

How do Bivalves eat?

a)

Filter feeders

b)

Radula

c)

Tentacles

d)

Beak

12.

All of the following are Bivalves, EXCEPT:

a)

Clams

b)

Mussels

c)

Snails

d)

Oysters

e)

Scallops

13.
What does Cephalopod mean?
a)
means "2-shells"
b)
means "head-foot"
c)
means "stomach-foot"
d)
means "soft bodied"
14.
The modified arm of male cephalopods that is used for reproduction is called the
a)
spermatophore
b)
hectocotylus
c)
crop
d)
chromatophore
15.

What substance does bivalves secrete to form the shell?

a)

carbon calcinate

b)

Calcium carbonate

c)

carbon calcium

d)

carbonic calcinic

16.

Organs that are in contact with blood supply and specialized for gas exchange.

a)

fin

b)

radula

c)

bivalve

d)

gills

17.

Which TYPE of mollusk has two shells?

a)

Bivalve

b)

Gastropod

c)

Cephalopod

18.

Which of the following is a role of the oyster and/or oyster reef? (Select ALL that apply)

a)

produce medicines for human use

b)

part of the food chain

c)

habitat for other organisms

d)

filter water

19.
Which class of mollusks is shown in the picture?
a)
Gastropoda
b)
Molluska
c)
Bivalia
d)
Polychaeta
20.

What class does this chiton belong to?

a)

Bivalvia

b)

Scaphopoda

c)

Gastropoda

d)

Polyplacophora

21.

What controls the opening and closing of bivalve shells

a)

Mantle

b)

Radula

c)

Adductor Muscles

d)

Siphon

22.
A rasping, tongue-like organ with backwards-facing teeth
a)
radula
b)
buccal cavity
c)
valve
d)
intestine
23.
The cells in skin of cephalopods that allow them to change colors are called
a)
pigmentocytes
b)
chromatophores
c)
dermatophores
d)
branchiocytes
24.

What is a distinct characteristic of the Phylum Echinodermata?

a)

Five-rayed symmetry

b)

Segmented body

c)

Unsegmented body with a head, foot, and lump of body organs

d)

Jointed legs and an exoskeleton

25.

Choose all the correct characteristics about echinoderms.

a)

marine invertebrates

b)

marine vertebrates

c)

have pentaradial symmetry

d)

tube feet help with movement and feeding

26.

Choose the correct description of how echinoderms eat and digest food.

a)

use tube feet to open up shells

b)

stomach releases enzymes, food is digested inside the body

c)

the everted stomach enters the shell

d)

stomach releases enzymes, food is digested outside the body

27.

What is the job of tube feet?

a)

gas exchange in respiration

b)

used as a way to release waste

c)

help with locomotion

d)

stick to the seafloor

28.

Identify the group of marine organisms the species in the picture belongs to.

a)

plankton

b)

echinoderms

c)

crustaceans

d)

chordates

29.
What type of symmetry do adult echinoderms exhibit?
a)
Asymmetry
b)
Pentaradial symmetry
c)
Bilateral symmetry
d)
Trilateral symmetry
30.
Echinoderms have an internal skeleton and a system of fluid-filled tubes called a(n)...
a)
water vascular system
b)
nervous system
c)
notochord
d)
ampulla
31.
Sea stars feed by
a)
Injecting poison that digests the prey 
b)
Everting their stomach to digest prey
c)
Chewing their prey with jaws and teeth
d)
squeezing their prey until it dies
32.
What phylum do echinoderms belong to?
a)
Cnidaria
b)
Porifiera
c)
Echinodermata
d)
Chordata
33.
Organ in starfish that can turn itself inside out when feeding
a)
pyloric stomach
b)
madreporite
c)
cardiac stomach
d)
digestive gland
34.
The nerve that runs down each arm of a starfish is the _____
a)
nerve ring
b)
stone nerve
c)
radial nerve
d)
ampulla
35.
What type of skeleton do echinoderms have?
a)
Exoskeleton
b)
Hydrostatic skeleton
c)
Endoskeleton
d)
Mesenteric skeleton