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Invertebrates
Test Description: Animals without backbones
Instructions: Answer all questions to get your test result.
1) Animals without a backbone are called?
A
invertebrates
B
planarians
C
vertebrates
2) Crabs, lobsters, and shrimp are called?
A
echinoderms
B
crustaceans
C
arthropods
3) What is a type of flatworm?
A
earthworm
B
planarian
C
leech
4) Arthropods have a hard skeleton on the outside of their body called?
A
exoskeleton
B
endoskeleton
C
abdomen
5) What are the simplest kind of worms called?
A
segmented worms
B
roundworms
C
flatworms
6) What invertebrates use poisonous stingers on their tentacles to capture prey and for protection?
A
mollusks
B
cnidarians
C
crustaceans
7) What are spiny skinned invertebrates called?
A
echinoderms
B
cnidarians
C
crustaceans
8) What is the largest invertebrate group?
A
segmented worms
B
crustaceans
C
arthropods
9) What is the simplest invertebrate?
A
sponges
B
mollusks
C
roundworms
10) What needs warm clean water to grow?
A
coral reefs
B
arachnids
C
insects
11) Most seashells come from soft bodied invertebrates called?
A
arachnids
B
hollow
C
mollusks
12) Which phylum has jointed legs, a body divided into sections, and an exoskeleton?
A
crustaceans
B
arthropod
C
mollusk
13) A sponge's body has no____, no bones, and is hollow inside.
A
thorax
B
segmented
C
symmetry
14) Earthworms, sandworms, and leeches are in the phylum of ______ worms.
A
sponges
B
echinoderms
C
segmented
15) Insects have three body sections; the head, the thorax, and the______.
A
legs
B
abdomen
C
antennae
16) Some, __________, such as spiders, can spin webs to trap their food.
A
flatworms
B
arachnids
C
cnidarians
17) Invertebrates are divided into groups called?
A
sponges
B
roundworms
C
phyla
18) Roundworms have a ______ digestive system.
A
one-way
B
two-way
C
three-way
19) Cnidarians have bodies that are ______ cell layers thick.
A
two
B
three
C
four
20) An earthworm has complex _____ systems that keep it alive.
A
jointed
B
abdomen
C
organ
*select an answer for all questions
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