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Ch 9, 6th Grade
Test Description: Intro to animals
Instructions: Answer all questions to get your test result.
1) All animals are
A
multicellular
B
begin life as a zygote
C
all of the above
D
unable to make their own food
2) What percent of all known animal species is made up by invertebrates?
A
71%
B
95%
C
34%
D
50%
3) Adaptations that include senses, skeletons, and circulation are called
A
constructional adaptations
B
behavioral adaptations
C
functional adaptations
D
structural adaptations
4) The arthropod group that has 8 legs is
A
insects
B
crustaceans (lobsters, crabs)
C
arachnids (spiders, scorpions)
D
millipedes and centipedes
5) Which arthropod part is where the legs are attached?
A
head
B
thorax
C
abdomen
6) Which kind of symmetry does a penguin have?
A
radial
B
bilateral
C
asymmetry
7) All members of this invertebrate group filter food and can only move when they are young
A
cnidarians
B
mollusks
C
sponges
D
segmented worms
8) This group's name is Annelida, which means little rings.
A
segmented worms
B
roundworms
C
flatworms
D
echinoderms
9) Have tube feet that help them move
A
cnidarians
B
arthropods
C
echinoderms
D
mollusks
10) Some have shells; others do not
A
mollusks
B
cnidarians
C
arthropods
D
roundworms
11) Have a cuticle that is replaced in the molting process
A
roundworms
B
arthropods
C
segmented worms
D
flatworms
12) Which is NOT a group of fish?
A
sharks and rays
B
boneless
C
bony
D
jawless
13) A turtle would be an example of a
A
amphibians
B
mammal
C
fish
D
reptile
14) Birds do not have/do what to allow them to fly
A
hollow bones
B
crystallize urine
C
an air bladder
D
wings and strong chest muscles
15) T/F: Chordates can be invertebrates.
A
true
B
false
16) Which is NOT a characteristic of a chordate?
A
backbone
B
tail
C
notochord
D
nerve cord
17) What does an open circulatory system involve?
A
a heart pumping blood into an open chamber
B
organs producing their own blood
C
none of the above
D
blood vessels that leak out onto the body
18) An inherited trait that increases an organism's chances of surviving and reproducing in its environment
A
adaptation
B
molting
C
endoskeleton
D
parasite
19) The system scientists use to organize living things is called
A
taxonomy
B
taxation
C
taxidermy
D
organization
20) Adaptations that help a species survive or maintain homeostasis, like successful reproduction, are called
A
structural adaptations
B
behavioral adaptations
C
functional adaptations
*select an answer for all questions
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