WorksheetsZoology Chap 35 - Mollusks
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Term that describes animals with a hollow, fluid filled cavity completely surrounded by a mesoderm.
a)
coelomate
b)
acoelomate
c)
pseudocoelomate
d)
parasites
2.
What does the name "mollusk" stand for?
a)
little rings
b)
soft body
c)
shells
d)
coelomate
3.
Which part of the mollusk contains the heart, digestive and reproductive organs?
a)
radula
b)
head-foot
c)
visceral mass
d)
trochopore
4.
The mollusk larval stage of development is called the
a)
coelomate
b)
trochopore
c)
radula
d)
cephalopod
5.
Organs that are in contact with gas supply and responsible for gas exchange are called
a)
gills
b)
radula
c)
visceral mass
d)
gizzards
6.
Mollusk's tongue-like strip covered with teeth that point backwards
a)
gills
b)
trochopore
c)
visceral mass
d)
radula
7.
Which of these is an example of a gastropod?
a)
snail
b)
clam
c)
earthworm
d)
octopus
8.
Which of these is an example of a bivalve?
a)
snail
b)
clam
c)
earthworm
d)
octopus
9.
Which of these is an example of a cephalopod?
a)
snail
b)
clam
c)
earthworm
d)
octopus
10.
All gastropods have shells
a)
true
b)
false
11.
Mollusks that have 2 shells are members of the class
a)
gastropods
b)
bivalves
c)
cephalopods
12.
Structures on clams that allow water and other materials to enter and leave are called
a)
siphons
b)
gills
c)
radulas
d)
trochopores
13.
Which has the largest brain of all invertebrates?
a)
bivalves
b)
gastropods
c)
cephalopods
d)
oligochaeta
14.
Snails are most active in dry environments.
a)
true
b)
false
15.
Clams are cephalized animals
a)
true
b)
false
100 %
