WorksheetsMollusks
Total questions: 29
Worksheet time: 28mins
Name
Class
Date
1.
What type of body do all Mollusks have?
a)
Segmented
b)
Soft
c)
Rigid
d)
Clear
2.
In what type of environment do MOST mollusks live?
a)
Soil
b)
Freshwater
c)
Marine
d)
Terrestrial
3.
Which class of Mollusks includes snails, slugs, or nudibranches?
a)
Cephalapods
b)
Bivalves
c)
Gastropods
4.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
5.
Which class of Mollusks include organisms that all have two shells?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
6.
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
7.
Which class of Mollusks include organisms that have camera-like eyes similar to humans?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
8.
Which class of Mollusks is the only class with some terrestrial species?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
9.
Which part of the Mollusk body contains organs?
a)
Foot
b)
Visceral Mass
c)
Trochophore
d)
Mantle
10.
Which class of Mollusks all have tentacles?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
11.
How are all mollusks similar to annelids?
a)
They have shells
b)
The have trochophore larvae
c)
They are segmented
d)
They live in marine environments
12.
What type of symmetry do MOST mollusks have?
a)
Bilateral
b)
Radial
c)
Circular
d)
Asymmetrical
13.
Which class of Mollusks have the most advanced nervous system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
14.
Which of the following is the correct description of reproduction in Mollusks?
a)
Mostly asexual
b)
Budding
c)
Regeneration
d)
Mostly sexual
15.
Which of the following is the organ used by Mollusks for excretion?
a)
gills
b)
nephridia
c)
mantle
d)
visceral mass
16.
Which of the following is the correct description of respiration in Mollusks?
a)
They use diffusion through their moist skin and gills in marine environments
b)
They use primitive lungs in marine environments and gills on land.
c)
They use nephridia to exchange oxygen and carbon dioxide
d)
They use gills in marine environments and primitive lungs on land.
17.
Which class of Mollusks have a closed circulatory system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
All of the classes
18.
Which of the following is the correct description of the body cavity of Mollusks?
a)
They are protostome acoelomates
b)
They are protostome coelomates
c)
They are deuterostome coelomates
d)
They are protostome pseudocoelomates
19.
Which class of Mollusks have many species that are sessile?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
20.
Which class of Mollusks include clams, oysters, and mussels?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
21.
Which class of Mollusks include squid, cuttlefish and octopus?
a)
Gastropods
b)
Bivalves
c)
Caphalopods
22.
What type of coelomate are echinoderms?
a)
Protostome coelomate
b)
Deuterostome coelomate
23.
Which of the following terms means "spiny skin"?
a)
Porifera
b)
Echinoderm
c)
Mollusk
d)
Cnidaria
24.
What unique system of internal canals and external tube feet help starfish move and feed?
a)
nephridia
b)
ganglia
c)
water vascular
d)
water recycling
25.
What type of symmetry do echinoderms exhibit as adults?
a)
asymmetrical
b)
Bilateral
c)
Radial
d)
Circular
26.
What type of symmetry do echinoderms exhibit as larvae?
a)
asymmetrical
b)
bilateral
c)
radial
d)
circular
27.
What type of circulatory system do echinoderms have?
a)
Closed
b)
Open
28.
How are the eggs of echinoderms fertilized?
a)
internally
b)
externally
29.
What type of skeleton do echinoderms have?
a)
hydrostatic
b)
endoskeleton of calcium plates
c)
Exoskeleton of calcium plates
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