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Science Unit 2 Lesson 4 Classifying Animals Key Words
Test Description: Vocab
Instructions: Answer all questions to get your test result.
1) Cannot be divided into mirror images. Example: Sponges have no true organization and are the only animals without real tissues or organs. They are simple invertebrates.
A
bilateral symmetry
B
asymmetrical
C
radial symmetry
2) A body plan in which an organism can be divided along only one plane of its body to produce two mirror images that are alike. For Example: Worms and all vertebrates simple and complex.
A
asymmetrical
B
radial symmetry
C
bilateral symmetry
3) A mammal in which the female has a pouch where offspring develop after birth. For Example: Kangaroos and koala bears
A
placental mammal
B
marsupial
C
monotreme
4) A mammal that lays eggs after the young hatch they are fed milk from their mothers. For Example: Duck billed platypus and the spiny anteater are members of this group. Do not mistake this for birds!
A
marsupial
B
placental mammal
C
monotreme
5) A mammal whose young develops within the mother. For example: dogs, tigers, whales, and elephants.
A
marsupial
B
monotreme
C
placental mammal
6) An organism with this symmetry has more than one line that divides this organism, arranged around a central point. For Ex: Jellyfish, sea anemones, corals, hydras, are all cnidarians of this group and simple invertebrates.
A
radial symmetry
B
asymmetrical
C
bilateral symmetry
7) Which organism is a complex invertebrate?
A
sponge
B
crab
C
coral
D
flatworm
8) Which is NOT a simple invertebrate?
A
sponges
B
snails
C
jellyfish
D
roundworm
9) Sea stars and sea cucumbers are _____.
A
echinoderms
B
cnidarians
C
mollusks
D
arthropods
10) Which animal is radially symmetrical?
A
worm
B
sea sponge
C
jellyfish
D
mollusks
11) How are annelid worms, such as earthworms, different from other worms?
A
They have a digestive system.
B
Their bodies are divided into segments.
C
Their bodies have bilateral symmetry.
D
They live inside the bodies of other animals.
12) Which of the following body features do bony fish have that sharks do NOT have?
A
cartilage
B
gills
C
jaws
D
swim bladders
13) All vertebrates are animals that have a backbone. They also have bilateral symmetry and endoskeletons.
A
true
B
false
14) Which animal group has the least organized body plan?
A
porifera
B
flatworms
C
mollusks
D
reptiles
15) Which of the following does not have bilateral symmetry?
A
mammals
B
sponges
C
worms
D
fish
16) All _____ share the same body plan. They have muscular foot or tentacles. They all have bilateral symmetry. Ex. snails, clams, and squids, almost all these have a shell and all are complex invertebrates.
A
echinoderms
B
arthropods
C
mollusks
17) ______ include sea stars, sea urchins, and sea cucumbers. They have a hardened skeleton located inside the body called endoskeleton and they are complex invertebrates.
A
echinoderms
B
arthropods
C
mollusks
18) This group includes spiders, crabs, and insects. They have a very efficient body plan with being small/light and a hard skeleton on the outside of the body called exoskeleton. They are bilateral symmetry and complex invertebrates.
A
mollusks
B
arthropods
C
echinoderms
19) Invertebrates do not have a backbone. Porifera, cnidaria, and worms are simple invertebrates.
A
true
B
false
*select an answer for all questions
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