Mollusks, Arthropods & Echinoderms Life Sci
[Pages:2]Mollusks, Arthropods & Echinoderms
Life Sci
Name ____________________________ Class __________________ Date ____________
1 Which is a characteristic of a mollusk?
Circle the answer letter.
a. segmented body b. unsegmented body c. unicellular d. prokaryote
6 Crustaceans are _________ with
appendages for chewing and two or three body segments.
a. arthropods b. gastropods c. bivalves
2 The _________ is a thin layer of tissue
that covers the internal organs of mollusks.
a. kidney b. radula c. mantle
7 Fill in the answers.
Insects have _______ body segments.
The _______________ is the middle section to which wings are attached.
3 A mollusk's _________ is a structure that is
bendable and it is covered in small teeth, which scrape against their food.
a. kidney
b. radula
c. mantle
8 A(n) _________ is an invertebrate that is
radially symmetrical and lives on the floor of the ocean.
a. mollusk
b. echinoderm
c. arthropod
4
Please Sign In or Sign U9p Tthoe ___d__o__w__nolfoecahdinoderms is made
_________ have the most advanced brain
up of a series of tubes inside the body
of all inverttehbreateps.riTnhetyahbavlee evxceelrlesniton of thtihsrouwghowrhkicshhfleuidestrun.
vision and the ability to learn from their
environment. Circle the answer.
a. water vascular system
Gastropods Sponges
b. respiratory system c. reproductive organs
Cephalopods Bivalves
5 Fill in the answer.
10 Which animal is not an arthropod?
Cross it out.
_____________________
is a process in which an organism's body changes dramatically during its overall life cycle.
? Copyright MMXVI NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to make copies for non-commercial educational purposes only. Visit us at
Mollusks, Arthropods & Echinoderms - Answer Key
Life Sci
Name ____________________________ Class __________________ Date ____________
1 Which is a characteristic of a mollusk?
Circle the answer letter.
a. segmented body b. unsegmented body c. unicellular d. prokaryote
6 Crustaceans are _________ with
appendages for chewing and two or three body segments.
a. arthropods b. gastropods c. bivalves
2 The _________ is a thin layer of tissue
that covers the internal organs of mollusks.
a. kidney b. radula c. mantle
7 Fill in the answers.
Insects have ___3____ body segments.
The ____t_h_o__r_a_x_____
is the middle section to which wings are attached.
3 A mollusk's _________ is a structure that is
bendable and it is covered in small teeth, which scrape against their food.
a. kidney
b. radula
c. mantle
8 A(n) _________ is an invertebrate that is
radially symmetrical and lives on the floor of the ocean.
a. mollusk
b. echinoderm
c. arthropod
4
Please Sign In or Sign U9p Tthoe ___d__o__w__nolfoecahdinoderms is made
_________ have the most advanced brain
up of a series of tubes inside the body
of all inverttehbreateps.riTnhetyahbavlee evxceelrlesniton of thtihsrouwghowrhkicshhfleuidestrun.
vision and the ability to learn from their
environment. Circle the answer.
a. water vascular system
Gastropods Sponges
b. respiratory system c. reproductive organs
Cephalopods Bivalves
5 Fill in the answer.
__M__e__t_a_m__o__r_p_h_o__s_i_s__
is a process in which an organism's body changes dramatically during its overall life cycle.
10 Which animal is not an arthropod?
Cross it out.
? Copyright MMXVI NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to make copies for non-commercial educational purposes only. Visit us at
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