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7th Grade Mollusks, Arthropods Echinoderms
Test Description: Chapter 10
Instructions: Answer all questions to get your test result.
1) Cephalopods move by
A
crawling along on a muscular foot.
B
using jet propulsion.
C
clapping their shells together.
D
moving their tentacles.
2) Which of the following is a characteristic of millipedes?
A
They inject venom into their prey.
B
They have one pair of legs on each segment.
C
They have two pairs of legs on each segment.
D
They have tiny stingers to stun their prey.
3) The bodies of all spiders have
A
two wings.
B
six swimmerets.
C
two body sections.
D
two antennae.
4) How do some insects help other living things?
A
by helping them reproduce
B
by spreading disease
C
by fertilizing soil
D
by spinning fibers made of silk
5) Which of the following is an advantage of using biological controls against harmful insects?
A
They kill bees.
B
They are natural predators of the harmful insects.
C
They kill all the insects that threaten a farmer’s crop.
D
They prevent all insect larvae from becoming adult insects.
6) Which of these is NOT a stage in complete metamorphosis?
A
nymph
B
larva
C
pupa
D
egg
7) Which of the following is a characteristic of echinoderms?
A
radial symmetry
B
three body sections
C
an exoskeleton
D
a segmented body
8) How does an echinoderm use its water vascular system?
A
to reproduce
B
to defend itself from predators
C
to capture food
D
to sense when food is near
9) Insect larvae are specialized for
A
eating and growing.
B
reproducing.
C
surviving in water.
D
breathing.
10) Snails and slugs belong to which group of mollusks?
A
arthropods
B
bivalves
C
gastropods
D
cephalopods
11) Which of these is NOT an arthropod?
A
centipede
B
grasshopper
C
lobster
D
snail
12) How does a grasshopper get oxygen?
A
through gills
B
through its skin
C
through a system of tubes
D
by breathing through its mouth
13) What types of foods do insects eat? a. b. c. d.
A
only paper and books
B
anything living or once-living
C
only animals
D
only plants
14) An echinoderm with long slender arms and flexible joints is a
A
sea urchin.
B
sea cucumber.
C
sea star.
D
brittle star.
15) An organism that eats wastes and dead organisms is a a. b. c. d.
A
producer.
B
consumer.
C
pollinator.
D
decomposer.
*select an answer for all questions
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