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Phylum Arthropoda
Subphylum Crustacea
Practice Quiz
This practice quiz is a tool to help you study for "real" quizzes and tests. The answers to each question, along with a brief explanation, can be found by scrolling down towards the bottom of the page.

To go back to the Arthropoda page, click here.
To go back to the Gallery of Marine Life, click here.

1. True or False: The Arthropod phylum is the largest on Earth.

2. Arthropods have
a. radial symmetry
b. bilateral symmetry

c. no symmetry
d. pentameral symmetry
e. cubic symmetry

3. Which of the following is a characteristic of arthropods?
a. tentacles
b. an internal skeleton
c. radula
d. teeth
e. molting

4. Which of the following is a characteristic of all crustaceans, but NOT all arthropods?
a. exoskeleton
b. jointed appendages
c. segmentation
d. gills
e. muscles

5. Which of the following is NOT a crustacean?
a. a horse fly
b. a snow crab
c. an spiny lobster
d. a hermit crab
e. a barnacle

6. Which of the following is an advantage of having a jointed skeleton?
a. flexibility
b. support
c. a location for muscle attachment
d. a and c are correct
e. a, b, and c are correct

7. How do arthropods grow?
a. continuously, by adding chiton to their exoskeletons
b. by adding new segments
c. episodically, by shedding their exoskeletons and growing new ones
d. by leaving their shell and finding a new, bigger one
e. by drinking lots of milk


1. True, the Arthropod phylum is the largest on Earth

2. b, individual bryozoans are bilaterally symmetrical and lack segmentation.

3. e, all arthropods grow by molting.

4. d, crustaceans possess gills to obtain oxygen from sea water.

5. a, marine arthropods (crustaceans) encompass a huge variety of familar organisms, including barnacles, shrimps, lobsters, and crabs. A horse fly is a terrestrial arthropod (Class Insecta).

6. e, jointed appendages and an exoskeleton provide protection, support, flexibility, and increased surface area for muscle attachment.

7. c, all arthropods grow by molting; they shed their exoskeletons, expand their bodies by absorping water, and then secrete a new, larger exoskeleton into which they grow.

page last updated on 9/7/03

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