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Name
Class
Date
Assessment
Chapter Test B
Classification
USING KEY TERMS
Use the terms from the following list to complete the sentences below. Each term
may be used only once. Some terms may not be used.
classification
dichotomous key
Protista
taxonomy
Archaebacteria
Animalia
scientific name
Eubacteria
Plantae
1. The science of describing, naming, and classifying organisms is
. CLSs1
2. Using a
, one can read pairs of statements and
choose the best answers in order to discover the identity of an organism. CLSs1
3. Members of kingdom
are single-celled or simple
multicellular organisms that don’t fit into any other kingdom.
4. A giant sequoia belongs to kingdom
. CLSs2
5. Members of kingdom
are multicellular, are often
able to move about, and respond to their environment. CLSs2
6. Members of kingdom
are bacteria that can live in
extreme environments. CLSs2
UNDERSTANDING KEY IDEAS
Write the letter of the correct answer in the space provided.
______ 7. Scientists classify organisms based on their CLSs1
a. likes and dislikes.
c. age.
b. numbers in the wild.
d. characteristics.
______ 8. What do scientists use to refer to organisms because common names
can create confusion? CLSs1
a. Latin names
c. scientific names
b. nicknames
d. first names
______ 9. The three most general levels of classification, from general to
specific, are
a. kingdom, family, and class. CLSs1
b. kingdom, phylum, and class.
c. kingdom, class, and order.
d. kingdom, phylum, and family.
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Classification
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Chapter Test B continued
______10. The scientific name for the common house cat is Felis domesticus.
What is its species name? CLSs1
a. Felis
c. feline
b. house cat
d. domesticus
______11. Today, what do scientists do when they encounter an organism that
fits none of the six kingdoms? CLSs1
a. destroy the organism
c. create a new kingdom
b. change the organism
d. leave the new organism alone
12. Explain why Carolus Linnaeus simplified the naming of living things by giving
each species a two-part scientific name. CLSs1
13. What traits do scientists use to divide prokaryotes into groups? CLSs2
14. Explain how a dichotomous key can help you identify an organism you don’t
recognize. CLSs2
15. Why do scientists classify a sponge as a simple animal and not a plant? CLSs2
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Chapter Test B continued
CRITICAL THINKING
16. Hundreds of years ago, scientists did not have microscopes, and so were
unable to learn about microscopic organisms. Describe how this might have
affected daily life back then. CLSs1
17. Imagine you have traveled forward in time 2 million years to discover that
Earth still supports life. Briefly describe the conditions on Earth. Describe an
organism that is unchanged, one that has changed slightly, and a brand-new
organism on Earth. CLSs2
18. Suppose an alien from another planet asks you, “Which Earth organism is
best suited for life on Earth?” How would you answer? Explain. CLS2
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Chapter Test B continued
INTERPRETING GRAPHICS
Use the diagram below to answer questions 19 and 20.
A
B C
D
E
F
G
H
I
J
K
L
M
N
19. If species A through I are all in the same genus, what is similar about their
scientific names? CLSs1
20. Which organisms are more closely related: I and J, or I and A? Explain your
answer. CLSs1
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TEACHER RESOURCE PAGE
4. Answers will vary. Sample answer: No;
4.
5.
6.
7.
8.
9.
10.
11.
12.
I don’t think this would be a good
idea. Although the clans would probably be able to learn the names quicker
this way, the Noid names would not
have any significant meaning for the
Druffs, and vice versa. The names
would therefore be easy to forget and
would not communicate any useful
information.
5. Answers will vary. Sample answer:
Perry Noid should urge the clans to
keep their common names for plants
and animals. But, he should also
encourage them to create a scientific
name for each species. The scientific
name should have a clear meaning
that both clans can understand.
Section Quizzes
13.
SECTION: SORTING IT ALL OUT
1.
2.
3.
4.
5. C
6. D
7. A
B
C
A
B
14.
SECTION: THE SIX KINGDOMS
1.
2.
3.
4.
5.
6.
7.
8.
9.
B
A
C
F
D
E
A
B
C
15.
Chapter Test A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
B
A
A
C
D
C
A
A
C
D
B
C
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
D
B
A
F
C
D
B
E
A
C
A
C
16.
Chapter Test B
1. taxonomy
2. dichotomous key
3. Protista
Plantae
Animalia
Archaebacteria
D
C
B
D
C
Before the time of Carolus Linnaeus,
some organisms had names that were
up to 12 words long. In addition, many
organisms had more than one common name. Both these situations made
communicating about certain living
things complicated. Creating a scientific name for organisms by using the
genus and species simplified communication and also gave each organism
just one name.
Scientists divide prokaryotes, or
organisms without nuclei, into groups
based on their ability (or inability) to
live in certain environments.
A dichotomous key will help you
identify an organism by giving you sets
of statements from which you choose
the best answers, based on the characteristics of the organism. At the end of
the key, your choice will have
narrowed to one specific organism.
A sponge is classified as a simple animal and not a plant, because even
though it does not move, it must get
its food from its environment and
cannot make food through photosynthesis. In addition, sponges do not
have cell walls or chlorophyll.
Answers will vary. Sample answer:
When scientists did not have microscopes, they could not learn about
microscopic organisms. These organisms would have included many that
caused disease and decomposition in
humans and other animals. Not knowing about certain disease-causing bacteria would make it difficult for
doctors to treat the illnesses properly,
and so more people, farm animals, and
pets would get ill and possibly die of
these diseases than do now.
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TEACHER RESOURCE PAGE
Standardized Test
Preparation
17. Answers will vary. Sample answer:
Earth may be colder than it is today,
with many organisms having become
extinct due to the cold. However,
many archaebacteria will be the same
because they can handle extreme environments. Humans might develop
more hair to stay warmer. A new
organism on Earth might be a fungilike organism that is able to move
itself from place to place across the
cold landscape in order to find materials it can absorb and digest. Unlike
animals, fungi would have limited
ways of responding to changes in their
environment.
18. Answers will vary. Sample answer: I
would tell the alien that all living
things on Earth are well suited for life,
because those that aren’t have died off.
19. Species A through I would all share
the same first word in their scientific
names. For example, if they were all
cats, their scientific names would all
begin with Felis followed by a unique
species name.
20. I and J are on different sides of the
first big branch. This means they are
in distantly-related groups. I and A are
in the same group, so they are more
closely related than I and J.
READING
Passage 1
1. A
2. I
3. C
Passage 2
1. A
2. I
3. B
4. I
INTERPRETING GRAPHICS
1.
2.
3.
4.
5.
MATH
1. B
2. I
Vocabulary Activity
1.
2.
3.
4.
Chapter Test C
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
C
B
C
D
C
B
A
B
A
D
C
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
A
G
C
F
D
C
A
B
B
C
A
kingdoms
classes
orders
families
genera
species
taxonomy
classification
dichotomous key
a. Eubacteria
b. Plantae
c. Archaebacteria
d. Animalia
e. Fungi
f. Protista
SciLinks Activity
Answers will vary. Sample illustrations:
1. A mushroom growing on a forest floor,
where there is little sunlight, surrounded by rotting leaves, decomposing sticks, and a crumbling log.
2. A sunflower growing along a fence
line with a stream nearby. There is a
lot of bright sunlight.
3. A horse eating grass in a pasture, or a
bird building a nest out of twigs on the
branch of a tree.
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Classification