Download science booklet grade 7 - Cairo Modern International School

CAIRO MODERN INTERNATIONAL SCHOOL
SCIENCE BOOKLET
GRADE 7
QUARTER 1
STUDENT'S NAME:
....................................................
GRADE 7
WORKSHEET
UNIT 1
LESSON 1
INTRODUCTION TO LIVNG THINGS
USING KEY TERMS
Complete each of the following sentences by choosing the correct term from the
word bank.
stimulus
heredity
homeostasis
consumers
1. The process of maintaining a stable internal environment is known as
______________________.
2. Offspring resemble their parents because of ______________________.
3. A ______________________ obtains food by eating other organisms.
4. A _____________________any change that affects the activity of living
organisms
Multiple Choice
_____ 1. Which of the following statements about cells is true?
a. Cells are the structures that contain all of the materials necessary for
life.
b. Cells are found in all organisms.
c. Cells are sometimes specialized for particular functions.
d. All of the above
_____ 2. Which of the following statements about all living things is true?
a. All living things reproduce sexually.
b. All living things have one or more cells.
c. All living things must make their own food.
d. All living things reproduce asexually.
_____ 3. Organisms must have food because
a. food is a source of energy.
b. food supplies cells with oxygen.
c. organisms never make their own food.
d. All of the above
_____ 4. A change in an organism’s environment that affects the organism’s
activities is a
a. response.
c. metabolism.
b. stimulus.
d. producer.
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Teacher :Dlaia Alazazy
5. The following image should be studied and used to answer the following
question.
What type of reproduction is occurring in the above image? In addition, identify
the specific method you observe.
A. sexual reproduction, meiosis
B. reproduction is not occurring
C. asexual reproduction, budding
D. asexual reproduction, binary fission
6. Which of the following is an example of homeostasis?
A. A human body loses too much heat on a cold day, and hypothermia occurs.
B. A cactus stores water during wet periods, allowing it to live through dry
periods.
C. A human participates in vigorous activity on a hot day and eventually suffers
from dehydration.
D- A snake rests in the sun on a summer day, and its body temperature
eventually becomes too hot for survival.
7. How do producers get the energy their bodies need to survive?
A. Producers make their own food.
B. Producers get energy through the burning of fossil fuels.
C. Producers cannot make their own food and must eat other organisms.
D. Producers get energy by breaking down the nutrients in dead organisms.
8. What are the four things that all living things need to survive?
A. water, air, food, and a place to live
B. a place to live, light, air, and mobility
C. food, water, a place to live, and family
D. light, food, sleep, and the ability to hunt
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Teacher :Dlaia Alazazy
Short Answer
1. What is the difference between asexual reproduction and sexual reproduction?
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
2. In one or two sentences, explain why living things must have air.
_________________________________________________________________
_________________________________________________________________
3-Define stimulus and homeostasis
_________________________________________________________________
_________________________________________________________________
4- Write the needs of living things
_________________________________________________________________
_________________________________________________________________
5- Write some examples of stimulus . _____________________________________
____________________________________________________________________
6-Writhe the characteristics of living things _________________________________
____________________________________________________________________
.
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 1
LESSON 2
THEORY OF EVOLUTION
Choose the correct answer
1-What is evolution?
A.
a group of organisms that can mate to produce fertile offspring
B.
the process by which inherited traits of a population change over many
generations
C.
a trait that allows organisms in a population to survive and reproduce in their
environment
D.
the process in which individuals better adapted to their environment are
more likely to survive and reproduce
2-Which of these statements best describes what Charles Darwin observed on the
Galápagos Islands?
A.
B.
C.
D.
The finch population on each island was unique.
The finches on the islands ate seeds and nuts but no insects.
The finches on the islands were the same as the finches in Ecuador.
The finches could produce offspring only with finches from other islands.
3-Which of the following is a situation that could lead to the extinction of a species?
A.
B.
C.
D.
increased habitat
increased food supply
increased competition
increased population size
4-What is artificial selection?
A.
B.
the process by which humans breed organisms for certain characteristics
the process by which inherited traits in a population change over generations
C.
the process by which Charles Darwin noted the differences among finches on
the Galápagos Islands
D.
the process in which individuals better adapted to their environment are
more likely to survive and reproduce
5-What is a population?
A.
a group of organisms that can mate to produce fertile offspring
B.
a group of organisms of the same species that live in a defined geographical
area
C.
a process by which inherited traits in a population change over many
generations
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Teacher :Dlaia Alazazy
D.
a process in which better-adapted individuals are more likely to survive and
reproduce
6-Darwin’s theory of natural selection consists of four important parts. Which of
these correctly lists the four essential parts of natural selection?
A.
B.
C.
D.
living space, adaptation, selection, and hunting
overproduction, genetic variation, comprtition, and adaptation
selection, extinction, underproduction, and competition
asexual reproduction, genetic variation, selection, and adaptation
7-Which of the following best describes the role of mutation in natural selection?
A.
A mutation is a feature that helps an organism to better survive in its
environment.
B.
An organism may acquire an advantageous mutation by interacting with its
environment.
C.
A mutation may result in an adaptive trait that makes an organism more
likely to reproduce.
D.
Organisms with certain physical traits are more likely to win competitions for
limited mutations.
8-What did Darwin do in order to study plants and animals?
a. He took a trip around the world.
b. He studied theology.
c. He formed theories.
d. He became a doctor.
9-What did Darwin do during his travels?
a. He wrote a book about his theory.
b. He collected thousands of plant and animal samples.
c. He took photos of plants and animals.
d. He visited all the continents.
10 .What puzzled Darwin about the Galápagos finches?
a. They were so different.
b. They should not have been there.
c. They were too similar.
d. They were similar but had many adaptations.
Match the correct description with the correct term. Write the letter in the space
provided.
_____ 11. the idea that human populations can
grow faster than the food supply
_____ 12. the idea that Earth had formed naturally
over a long period of time
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Teacher :Dlaia Alazazy
a. Lyell’s theory
b. selective breeding
c. Malthus’sprinciple
_____ 13. the practice of breeding plants and animals to have desired traits
Answer the following questions
1-What was one way that finches on different islands differed from each other?
_________________________________________________________________
2-. What was the beak of each finch adapted to?
_________________________________________________________________
4. Why might artificial breeding be used in horses?
_________________________________________________________________
_________________________________________________________________
Match the correct description with the correct term. Write the letter in the space
provided.
_____ 1. Many more offspring are produced than will survive.
a. inherited variation
_____ 2. No two offspring are alike.
_____ 3. Many offspring will be killed before reproducing.
_____ 4. The best adapted organisms will have many offspring.
b. struggle to survive
c. overproduction
d. successful
reproduction
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 1
LESSON 3
EVIDENCES OF EVOLUTION
choose the correct answer
1-The diagram below shows a portion of the fossil record in sedimentary rock.
Different rock layers and fossils are clearly visible.
Which layer of rock is the oldest?
A.
B.
C.
D.
Layer A is the oldest.
Layer B is the oldest.
Layer D is the oldest.
They are all the same age.
2-Nada is studying fossils. His teacher wrote the following statements on the board
and asked the students to put them in the correct order to describe how fossils are
formed.
1. Minerals seep into the organism’s body and replace it with stone.
2. The organism completely decomposes, leaving behind an imprint.
3. An organism dies and its body is covered with a layer of sediment.
4. Time passes, and sediment layers continue to build up on the organism.
Which is the correct order of events for fossil formation?
A.
B.
C.
D.
3, 4, 1, 2
2, 3, 4, 1
1, 3, 2, 4
3, 2, 1, 4
3-Dana discovered that two modern-day species have very similar DNA. He
concludes that the two species are closely related. What type of evidence did
William most likely use to reach his conclusion?
A.
fossil evidence
B.
genetic evidence
C.
structural evidence
D.
evidence from developmental patterns
4-Which of these cases provides embryological evidence that two species share a
common ancestor?
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Teacher :Dlaia Alazazy
A.
B.
C.
D.
two species with very similar DNA
two species with different body structures
two species with different structures that have similar functions
two different species with similar patterns of early development
5-Which of these descriptions is an example of an unused body structure?
A.
B.
C.
D.
a bat’s wing that enables it to fly
the tiny leg bones found in snakes that have no legs
the front legs of a dog that supports its weight as it walks and runs
the tentacles of an octopus that aid it in movement and catching prey
6-Which of these answers best describes a fossil?
A.
B.
C.
D.
thick layers of rock
organism from which other organisms are descended
body of an organism that died recently but has not decomposed
remains of a once-living organism found in layers of rock, ice, or amber
7-Which of these best describes the tiny leg bones that some whales have, which do
not aid in their movement or serve any other function?
A.
B.
C.
structures that grows and improves in function as they are used
structures that will become adaptations when the environment changes
structures that have lost all or most of their function over evolutionary time
D.
structures that function at certain times of the year or under certain
conditions
8-Two species might have similar skeletal structures that have different functions.
What do these types of structures suggest about the relationship between the two
species?
A.
Common structures with different functions suggest that the species live in
the same habitat.
B.
Common structures with different functions suggest that the species do not
share a common ancestor.
C.
Common structures with different functions suggest that one of the species
never learned how to use the structure properly.
D.
Common structures with different functions suggest that the species share a
common ancestor that also had a similar structure.
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Teacher :Dlaia Alazazy
9-Snakes have traces of leg like structures that are not used for movement. Which of
the following could you infer from this evidence?
A.
B.
C.
D.
Snakes do not have ancestors.
Snakes are an example of transitional fossils.
Snakes share a common ancestor with animals that have legs.
Snakes and animals that have legs are part of the same species.
10-Describe three different types of evidence that scientists use to support the
theory of evolution.
___________________________________________________
___________________________________________________
___________________________________________________
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 1
LESSON 5
CLASSIFICATION OF LIVING THINGS
Choose the correct answer
1. Which factor best explains why classification systems change over time?
A.
B.
C.
D.
changing environments lead to reclassification
increased plant species leads to reclassification
changes in food sources leads to reclassification
increased knowledge of genetics leads to reclassification
2. What are two different characteristics that scientists examine to classify living
things?
A.
B.
C.
D.
blood characteristics and naming characteristics
chemical characteristics and DNA characteristics
physical characteristics and chemical characteristics
physical characteristics and environmental characteristics
3. Which of the following identifies the levels of classification in correct order?
A.
B.
C.
D.
domain, kingdom, phylum, class, order, family, genus, species
genus, species, domain, kingdom, phylum, class, order, family
domain, kingdom, genus, species, phylum, class, order, family
genus, species, phylum, class, order, family, domain, kingdom
4. Nancy listed major questions that scientists try to answer when they classify
organisms. Her list included the following questions:
How many living things are there?
What are the characteristics that define living things?
What additional question would be best for Nancy to add to her list about
classification?
A.
B.
C.
D.
How are living things related?
How do living things get energy?
What do living things need to survive?
Where do living things make their home?
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Teacher :Dlaia Alazazy
5. How are members of Domain Eukarya different from members of Domain Archaea
and Domain Bacteria?
A. Members of Domain Eukarya are less complex than the members of Domain
Archaea and Domain Bacteria.
B. Members of Domain Archaea and Domain Bacteria are multicellular, and
members of Domain Eukarya are usually single-celled organisms.
C. Members of Domain Eukarya have cells with membrane-bound organelles, and
members of Domain Archaea and Domain Bacteria lack nuclei.
D. Members of Domain Bacteria and Domain Archaea have structures for making
their own food, and members of Domain Eukarya lack these structures.
6. Linnaeus’s contributions most helped develop which area of science?
A.
B.
C.
D.
medicine
taxonomy
chemistry
microbiology
7.Which of the following statements correctly describes a kingdom of Domain Eukarya?
A.
B.
C.
D.
Kingdom Protista includes single-celled organisms that lack nuclei.
Kingdom Animalia includes multicellular organisms that make their own food.
Kingdom Plantae includes multicellular organisms that can move independently.
Kingdom Fungi includes organisms that get energy by decomposing materials in
their environment.
8. Which of the following is a characteristic of Domain Archaea?
A.
B.
C.
D.
multicellular
undergo photosynthesis
membrane-bound organelles
able to tolerate extreme conditions
9. Shaza's teacher gives her the following list of types of organisms:
1. Ferns 2. Yeasts
3. Algae
4. Insects
Shaza needs to identify the kingdom for each type of organism. In what order could
she list the kingdoms for organisms 1 through 4?
A.
B.
C.
D.
Plantae, Fungi, Protista, Animalia
Animalia, Protista, Plantae, Fungi
Plantae, Protista, Fungi, Animalia
Fungi, Plantae, Protista, Animalia
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Teacher :Dlaia Alazazy
10. During a research project, a scientist collects snails from a beach. He finds several
snails that have shells of about the same size and shape. However, the shells have
very different patterns and colors. How could the scientist best decide whether the
snails belong to different species or to the same species?
A.
B.
C.
D.
He could study how the snails develop.
He could examine the snails’ RNA and DNA.
He could classify the snails according to shell color.
He could look for other physical similarities in the snails.
11. Some living things are able to tolerate life in hot springs. To which of the following
domains would these organisms most likely belong?
A.
B.
C.
D.
Archaea
Protista
Eukarya
Bacteria
12. How did Carolus Linnaeus contribute to modern classification systems?
A.
B.
C.
D.
He identified the three domains of life.
He developed two-part scientific names.
He standardized common names of organisms.
He used chemical characteristics to classify organisms.
13. What are the four eukaryotic kingdoms?
A.
B.
C.
D.
Animalia, Bacteria, Fungi, Plantae
Animalia, Fungi, Plantae, Protista
Archaea, Animalia, Bacteria, Plantae
Archaea, Bacteria, Fungi, Protista
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 2
LESSON 1
ARCHAEA,BACTERIA,AND VIRUSES
MULTIPLE CHOICE
1. What type of organism can be found in extreme environments such as hot springs?
A.
B.
C.
D.
DNA
viruses
archaea
eukaryotes
2. Bacteria are generally found in which three shapes?
A.
B.
C.
D.
sphere, rod, spiral
polygon, cylinder, sphere
tube, spiral, hexagon
disc, sphere, spacecraft
3. How does the process of binary fission work in the asexual reproduction of bacteria?
A.
B.
C.
D.
Two cells join to become one larger cell.
One cell splits into two cells with identical DNA.
DNA material from the environment is added to the cell.
Bacteria can only reproduce via sexual reproduction, not asexual reproduction.
4. The table below shows characteristics of bacteria and viruses.
A
B
Number Type of
of Cells Reproduction
1
needs host; lytic
cycle
1
binary fission or
conjugation
Living or
Nonliving
nonliving
living
Which letter represents viruses?
A.
B.
C.
D.
A
B
both
Neither
5.How does a virus use a host to reproduce?
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Teacher :Dlaia Alazazy
A. The virus only uses a host cell for shelter; it does not use a host cell to
reproduce.
B. The host cell only provides the virus with the food it needs to reproduce on its
own.
C. The virus can replicate its own genetic material, but it uses the host for the
process of conjugation.
D. The host cell provides the virus with resources and shelter; its proteins replicate
the genetic material of the virus.
6.How does the process of binary fission differ from the lytic cycle?
A. There is very little difference between the two processes.
B. Both are processes by which viruses replicate; binary fission requires a host cell
and the lytic cycle does not.
C. Binary fission is the process by which one bacteria cells divides into two cells,
and the lytic cycle is the process by which viruses use a host cell to replicate.
D. Binary fission is the process by which two bacteria cells join to form one cell, and
the lytic cycle is the process by which viruses use a host cell to replicate.
7. What is conjugation?
A.
B.
C.
D.
A method of asexual reproduction where one cell divides into two.
A method of sexual reproduction where one cells acts alone to divide.
A method of asexual reproduction where offspring are created by budding.
A method of sexual reproduction where two cells temporarily join to combine
DNA.
8. The diagram below shows viruses and a host cell.
What process is happening in the diagram?
A.
B.
C.
D.
lytic cycle
homeostasis
sexual reproduction
asexual reproduction
SHORT ANSWER
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Teacher :Dlaia Alazazy
1. Name the two domains of prokaryotes and explain at least two key differences
between the domains.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
2. Why are viruses not considered living? Give at least two reasons in your answer.
___________________________________________________
_________________________________________________
3- What are the three ways by which bacteria can exchange DNA ?
_______________________
_______________________
_______________________
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 2
LESSON 3
INTRODUCTION TO PLANTS
MULTIPLE CHOICE
1. The following table shows characteristics of two major plant groups, labeled A and
B.
A
B
Produces seeds?
Yes
Yes
Produces fruit?
No
Yes
Produces flowers?
No
Yes
Produces cones?
Yes
No
In the above table, what is the correct label for the group described in column B?
A.
B.
C.
D.
seed plants
vascular plants
angiosperms
gymnosperms
2. What is the function of stems in vascular plants?
A.
B.
C.
D.
They make food for the plants.
They absorb minerals from the soil.
They hold plants in place in the soil.
They support the plants and keep them upright.
5. How many stages are in each plant life cycle?
A.
B.
C.
D.
one
two
three
four
3. Why are most nonvascular plants small?
A. They lack tissues to transport water, so they must be small.
B. They receive very little sunlight, so they are not able to grow to large sizes.
C. They live in arid locations and receive very little water, so they stay small to
conserve energy.
D. They are not small; a system of roots, stems, and leaves allows nonvascular
plants to grow to many different sizes.
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Teacher :Dlaia Alazazy
4.The following table shows characteristics of major plant groups.
A
B
Produces seeds?
Yes
Yes
Produces fruit?
No
Yes
Produces flowers?
No
Yes
Produces cones?
Yes
No
Which column correctly identifies gymnosperms?
A.
B.
C.
D.
column A
column B
columns A and B
neither column A nor B
5 The image below shows one type of plant.
What type of plant is shown above, and where would you be most likely to find it
living?
A.
B.
C.
D.
fern, tropics
conifer, forest
moss, harsh environments
liverwort, damp environments
6-What part of a plant’s leaves allows the plant to take in carbon dioxide and release
oxygen?
A.
B.
C.
D.
stem
cuticle
stomata
chloroplasts
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Teacher :Dlaia Alazazy
7-The image below shows a type of plant called a fern.
Which is the correct term for the newly forming leaves seen in the image?
A.
B.
C.
D.
frond
leaflet
rhizome
fiddlehead
8. Why do plants without vascular systems tend to grow small and close to the ground?
A.
B.
C.
D.
Nonvascular plants get less food than vascular plants.
Nonvascular plants lack structures that allow the plant to grow large.
Nonvascular plants grow close to the ground because they have small stems.
Nonvascular plants grow close to the ground in order to capture more sunlight.
9. The following diagram shows a plant.
What structural feature is missing from the above diagram, and what is one of its
functions?
A.
B.
C.
D.
roots; absorb sunlight
roots; supply plants with water
stems; store extra food
stems; hold the plant upright
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Teacher :Dlaia Alazazy
10. The following chart describes several different parts of flowering plants.
A
B
C
male
female
composed of
reproductive
reproductive
sepals and
structure
structure
petals
Which of the answers below gives the correct labels for columns A, B, and C?
A.
B.
C.
D.
A is pistil, B is stamen, C is flower
A is stamen, B is pistil, C is flower
A is angiosperm, B is flower, C is fruit
A is stamen, B is seed, C is gymnosperm
11. The following chart describes several different parts of flowering plants.
A
B
C
male
female
composed of
reproductive
reproductive
sepals and
structure
structure
petals
What is the correct label for column A?
A.
B.
C.
D.
seed
pistil
stamen
angiosperm
12. During which process do plants capture light energy and carbon dioxide and use it to
produce glucose?
A.
B.
C.
D.
fertilization
reproduction
photosynthesis
cellular respiration
13. During photosynthesis, what two things do plants use to produce glucose?
A.
B.
C.
D.
water and chlorophyll
light energy and oxygen
chlorophyll and carbon dioxide
light energy and carbon dioxide
14.Where would you expect to see a plant that does not have a vascular system?
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Teacher :Dlaia Alazazy
A.
B.
C.
D.
In a botanical museum, because they are all extinct.
Deeply rooted in a forest with a trunk that reaches 20 meters or more.
Low and close to the ground.
Climbing high while circling the branches of another plant.
SHORT ANSWER
1. Describe two types of nonvascular plants and explain why water is so important to
them.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
2. Describe how flowering plants reproduce through sexual reproduction.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
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Teacher :Dlaia Alazazy
WORKSHEET
UNIT 2
LESSON 4
PLANT PROCESSES
MULTIPLE CHOICE
1. What is an example of internal stimulus to which plants can respond?
A.
B.
C.
D.
light
hormones
temperature
soil conditions
2. What substance found within the chloroplasts of leaves is responsible for capturing
light energy during photosynthesis?
A.
B.
C.
D.
water
oxygen
chlorophyll
carbon dioxide
3. As you walk past a field of sunflowers, you notice the flowers are all facing the same
direction. This is an example of what?
A.
B.
C.
D.
transpiration
phototropism
photosynthesis
sexual reproduction
4. How does the result of asexual reproduction differ from the result of sexual
reproduction in plants?
A.
B.
C.
D.
There are fewer new plants created.
The resulting plant will be unable to reproduce.
The resulting plant is an identical genetic copy of the parent plant.
Plants created from asexual reproduction are unable to photosynthesize.
5.Which of the following scenarios could cause stomata to close?
A.
B.
C.
D.
The plant lives near a wetland area.
The soil around the plant is very wet.
The soil around the plant is very dry.
Rain has fallen every day for ten days.
6.The diagram below shows a flower, with several of its reproductive parts labeled.
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Teacher :Dlaia Alazazy
Which labels correctly identify the male and female reproductive structures of the
flower?
A.
B.
C.
D.
A and B are female structures, C and D are male structures
B and C are female structures, A and D are male structures
A and C are female structures, B and D are male structures
A and D are female structures, B and C are male structures
7. Which of the following is a function of stomata?
A.
B.
C.
D.
absorb sunlight
release glucose
release water vapor
absorb water through the roots
8. Which of the following best explains why many plants experience dormancy?
A.
B.
C.
D.
longer days
more rainfall
shorter nights
less direct sunlight
9. What material do plants make during photosynthesis?
A.
B.
C.
D.
glucose
organelles
chlorophyll
carbon dioxide
10. Which of the following is a plant structure that is involved in asexual reproduction?
A.
B.
C.
D.
stigma
stamen
pistil
tuber
SHORT ANSWER
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Teacher :Dlaia Alazazy
1. Describe why photosynthesis is important for environmental and human health.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
2.Describe how flowering plants reproduce through sexual reproduction.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
3.
sun.
The diagram below shows the process in which plants use energy from the
What is this process called?
In which plant organelle does this process occur?
How does the plant store the energy it gets from the sun?
Is a plant a producer, consumer, or decomposer?
___________________________________________________
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Teacher :Dlaia Alazazy
Grade 7
Final revision sheet quarter 1
Choose the letter of the best answer.
1. Which of the following scenarios describes an example of extinction?
A. Water pollution kills off all the fish that live in a small pond.
B. Every individual in a species of wolf is killed by hunters or lack of food.
C. The cutting down of a tree forces a bird to build a new nest in another tree.
D. A population of deer must move to a new forest when its original habitat is
destroyed by fire.
2. The diagram below shows a portion of the fossil record in sedimentary rock. Different
rock layers and fossils are clearly visible.
Which of these statements is true of the fossils and rock layers
shown in the diagram?
A. Layer B contains the second-oldest fossils.
B. Layer A contains the most recently formed fossils.
C. The fossils in layer B are older than those in layer D.
D. The fossils in layer D are the most recently formed.
3. What is artificial selection?
A. the process by which humans breed organisms for certain characteristics
B. the process by which inherited traits in a population change over generations
C. the process by which Charles Darwin noted the differences among finches on the
Galápagos Islands
D. the process in which individuals better adapted to their environment are more likely
to survive and reproduce
4
Which of these scenarios is an example of natural selection?
A. Farmers crossbreed two types of cows to produce a breed of cow that has highquality beef and can tolerate a hot climate.
B. Giraffes having longer necks survive a dry season by eating leaves from the tops of
trees. Those giraffes breed more successfully that year.
C. Dogs of the same breed and having a desirable coat color are bred with one another
to produce more puppies with that same coat color.
D. People kill rattlesnakes that rattle when approached by humans, but people do not
kill rattlesnakes that remain silent. The quiet snakes survive and breed
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5. The table below shows characteristics of different types of organisms or particles.
Number of Cells
Type of Reproduction
Living or Nonliving
A
1
needs host; lytic cycle
nonliving
B
1
binary fission or
conjugation
living
Which type of organism or particle is described in row B?
A. viruses
B. bacteria
C. ribosomes
D. genetic material
6. What part of a plant’s leaves allows the plant to take in carbon dioxide and release
oxygen?
A. stem
B. cuticle
C. stomata
D. chloroplasts
7. Snakes have traces of leg like structures that are not used for movement. Which of the
following could you infer from this evidence?
A. Snakes do not have ancestors.
B. Snakes are an example of transitional fossils.
C. Snakes share a common ancestor with animals that have legs.
D. Snakes and animals that have legs are part of the same species.
8. Which response below best describes fusion of gametes during sexual reproduction of
protists?
A. one gametes splits into two cells
B. two gametes each divide to form four cells
C. one gamete doubles its genetic information
D. two gametes join together to share genetic information
9. Tara is comparing the embryos of parrotfish and salamanders. Although the adult
organisms look very different, the embryos follow similar developmental pathways.
What does this suggest?
A. that parrotfish and salamanders are found in the fossil record
B. that parrotfish and salamanders have the same genetic makeup
C. that parrotfish and salamanders likely share a common ancestor
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D. that parrotfish and salamanders use their organs for different functions
10. How do some bacteria survive harsh conditions?
A. They attach to a host cell.
B. They change environments.
C. They cannot survive harsh conditions.
D. They encase some parts in an endospore.
11. Which of the following identifies the levels of classification in correct order?
A. domain, kingdom, phylum, class, order, family, genus, species
B. genus, species, domain, kingdom, phylum, class, order, family
C. domain, kingdom, genus, species, phylum, class, order, family
D. genus, species, phylum, class, order, family, domain, kingdom
13 .Which of the following best explains why many plants experience dormancy?
A. longer days
B. more rainfall
C. shorter nights
D. less direct sunlight
12. How are viruses harmful to host cells?
A. They use a host cell for food.
B. They are not harmful to host cells.
C. They destroy the host cell while replicating.
D. They replace a host cell nucleus with the virus nucleus.
13. Which of the following is a characteristic of fungi?
A. absorb nutrients from the environment
B. obtain nutrients by eating other animals
C. make nutrients using energy from the sun
D. make nutrients using particles in the atmosphere
14. Algae are considered what type of protist?
A. plantlike
B. animal-like
C. fungus-like
D. they are not considered a protist
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15 The following diagram shows a plant.
What structural feature is missing from the above diagram, and what is one of its
functions?
A. roots; absorb sunlight
B. roots; supply plants with water
C. stems; store extra food
D. stems; hold the plant upright
16. Which of the following is an example of an external stimulus that could cause a plant to
grow larger?
A. wilting
B. the presence of a predator
C. abundant sunlight and water
D. extremely dry and hot conditions
17. Two species might have similar skeletal structures that have different functions. What
do these types of structures suggest about the relationship between the two species?
A. Common structures with different functions suggest that the species live in the same
habitat.
B. Common structures with different functions suggest that the species do not share a
common ancestor.
C. Common structures with different functions suggest that one of the species never
learned how to use the structure properly.
D. Common structures with different functions suggest that the species share a
common ancestor that also had a similar structure.
18. How did photosynthesizing prokaryotes that lived during Precambrian time help life on
Earth become more diverse?
A. They reproduced quickly.
B. They became other organisms.
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C. They made conditions more favorable by enriching the soil.
D. They made conditions more favorable by increasing the amount of oxygen.
19. Some living things are able to tolerate life in hot springs. To which of the following
domains would these organisms most likely belong?
A. Archaea
B. Protista
C. Eukarya
D. Bacteria
20 Which dating method determines a fossil’s age by comparing it to other fossils?
A. fossil record
B. relative dating
C. absolute dating
D. radioactive dating
21. Similarities in the structures of two different species provide evidence that the species
evolved from a common ancestor. This type of evidence includes similar structures that
have different functions. Which of the following pairs of features have a similar
structure but have a different function in each organism?
A. a dolphin fin and a shark fin
B. human fingernails and monkey fingernails
C. the front leg of a cat and the wing of a bat
D. the wing of a bumble bee and the wing of a bird
22. What is a population?
A. a group of organisms that can mate to produce fertile offspring
B. a group of organisms of the same species that live in a defined geographical area
C. a process by which inherited traits in a population change over many generations
D. a process in which better-adapted individuals are more likely to survive and
reproduce
23. The illustration below shows the changes over time in a population of mice in the wild
after a population of hawks has moved into the grassy fields where they live. The white
and dark mice differ only in color.
Which of the following terms would best be used to describe the 3 steps shown in this
diagram?
A. variation
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B. selection
C. overproduction
D. selective breeding
24. During photosynthesis, what two things do plants use to produce glucose?
A. water and chlorophyll
B. light energy and oxygen
C. chlorophyll and carbon dioxide
D. light energy and carbon dioxide
25. The following chart describes several different parts of flowering plants.
A
B
C
male reproductive
structure
female reproductive
structure
composed of sepals
and petals
Which of the answers below gives the correct labels for columns A, B, and C?
A. A is pistil, B is stamen, C is flower
B. A is stamen, B is pistil, C is flower
C. A is angiosperm, B is flower, C is fruit
D. A is stamen, B is seed, C is gymnosperm
26. Which of the following scenarios could cause stomata to close?
A. The plant lives near a wetland area.
B. The soil around the plant is very wet.
C. The soil around the plant is very dry.
D. Rain has fallen every day for ten days.
27. What happens to gametes during sexual reproduction of protists?
A. fusion
B. fission
C. division
D. production of spores
28. What material do plants make during photosynthesis?
A. glucose
B. organelles
C. chlorophyll
D. carbon dioxide
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29.The diagram below shows viruses and a host cell.
In what way are host cells important to viruses?
A. Viruses use host cells for food.
B. Viruses need host cells to replicate.
C. Viruses travel to new locations with the help of host cells.
D. Viruses do not need host cells, but host cells do need viruses to reproduce.
29. A scientist is studying extreme environments like deep sea vents and hot springs. What
type of life should she expect to find in these environments?
A. virus
B. archaea
C. bacteria
D. eukaryotes
30. How do prokaryotes differ from eukaryotes?
A. Prokaryotes have a nucleus, while eukaryotes do not.
B. There is no difference between the two types of cells.
C. Prokaryotes are always multicellular, while eukaryotes are always single celled.
D. Prokaryotes are always single celled, while eukaryotes can be single-celled or
multicellular.
31. The following chart describes several different parts of flowering plants.
A
male
reproductive
structure
B
female reproductive
structure
C
composed of sepals
and petals
What is the correct label for column A?
A. seed
B. pistil
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C. stamen
D. angiosperm
32. Which of the following is a function of stomata?
A. absorb sunlight
B. release glucose
C. release water vapor
D.absorb water through the roots
33. Why do plants without vascular systems tend to grow small and close to the ground?
A. Nonvascular plants get less food than vascular plants.
B. Nonvascular plants lack structures that allow the plant to grow large.
C. Nonvascular plants grow close to the ground because they have small stems.
D. Nonvascular plants grow close to the ground in order to capture more sunlight.
34. Why are most nonvascular plants small?
A. They lack tissues to transport water, so they must be small.
B. They receive very little sunlight, so they are not able to grow to large sizes.
C. They live in arid locations and receive very little water, so they stay small to
conserve energy.
D. They are not small; a system of roots, stems, and leaves allows nonvascular
plants to grow to many different sizes.
35. What is the function of stems in vascular plants?
A.
B.
C.
D.
They make food for the plants.
They absorb minerals from the soil.
They hold plants in place in the soil.
They support the plants and keep them upright.
Answer the following questions in the space provided.
1. Describe three different types of evidence that scientists use to support the theory of
evolution.
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___________________________________________________________________________________
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2. Are viruses living or nonliving? Give at least three reasons to explain your answer.
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___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
3.Describe three ways that bacteria exchange their DNA.
_______________________________________________________________
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4. Write the 8 levels of classification .
_______________________________________________________________
_______________________________________________________________
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_______________________________________________________________
5- Write some organisms that can be used for artificial selection .
_______________________________________________________________
6- What do plants need for photosynthesis?
_______________________________________________________________
7-Describe two types of nonvascular plants and explain why water is so important to
them.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
8- What are the three ways by which bacteria can exchange DNA ?
_______________________
_______________________
_______________________
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