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True or False: The Arthropod phylum is the largest on Earth.
a. radial symmetry
b. bilateral symmetry
c. no symmetry
d. pentameral symmetry
e. cubic symmetry
Which of the following is a characteristic of arthropods?
b. an internal skeleton
Which of the following is a characteristic of all
crustaceans, but NOT all arthropods?
b. jointed appendages
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
Which of the following is an advantage of having a jointed skeleton?
c. a location for muscle attachment
d. a and c are correct
e. a, b, and c are correct
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
d. by leaving their shell and finding a new, bigger one
e. by drinking lots of milk
True, the Arthropod phylum is the largest on Earth
b, individual bryozoans are bilaterally symmetrical
and lack segmentation.
e, all arthropods grow by molting.
d, crustaceans possess gills to obtain oxygen from
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).
e, jointed appendages and an exoskeleton provide
protection, support, flexibility, and increased surface area for
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.