Unit 6 Review

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Unit 6 Review

• April 10

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• 1. Which land biome covers the most area on
  Earth?
• Desert
• b. Grassland
• c. Taiga
• d. Temperate Deciduous Forest

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library.thinkquest.org
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2. What is the main way people have reduced
habitats for wild species in grasslands? a.
building homes b. plowing the land for cereal
crops c. making roads d. all of the above
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3. Which of the following biomes has weather that
is warm and wet year-round? a. desert b. taiga c.
grassland d. tropical rain forest
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4. Why have people cleared so much of Earths
tropical rain forests? a. lumber b. ranches c.
farms d. all of the above
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5. How do temperate rain forests differ from
tropical rain forests? a. Temperate rain forests
are a source of lumber while tropical rain
forests are not. b. Temperate rain forests have
nutrient rich soil, allowing trees to grow back
when harvested, while tropical rain forests have
nutrient poor soil, preventing trees from growing
back rapidly. c. Temperate rain forests are
moist year round and tropical rain forests stay
dry most of the year. d. all of the above
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6. In which biome does drilling for oil and gas
interrupt migration patterns? a. desert b.
taiga c. grassland d. tundra
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7. Which is NOT an aquatic ecosystem? a.
freshwater b. estuary c. taiga d. wetland
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8. How do fish use oxygen from the water? a.
breath it with special lungs b. gills separate it
and send it to the blood stream c. take it in
through small pores d. absorb it through their
scales
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9. Which is NOT a freshwater ecosystem? a.
stream b. ocean c. lake d. river
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10. Which of the following is a biotic factor? a.
sunlight b. water c. worms d. climate
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11. In the figure shown, ____ an abiotic
factor. a. birds are b. insects are c. flowers
are d. rainfall is
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12. Which of these factors is biotic? a.
insects b. sunlight c. water d. soil
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13. Which of these factors is abiotic? a. bird b.
hawk c. frog d. wind
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14. On the coral reef ecosystem figure shown,
which factor is biotic? a. rocks b. sea horse c.
sand d. water
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15. On the coral reef ecosystem figure shown,
which factor is abiotic? a. algae b. sea
horses c. sharks d. sponges
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16. Where are tropical rain forests located? a.
near the equator b. near the polar circles c. on
the highest mountains
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17. Which is a forest biome consisting mostly of
cone-bearing evergreen trees? a. taiga b.
tundra c. temperate deciduous forest
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18. A cold, dry, and treeless biome is a
_____. a. taiga b. desert c. tundra
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19. A cactus does not need a lot of water. In
which of the following climates could it
survive? a. cold b. dry c. wet d. windy
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20. Every ecosystem requires which of the
following to support life? a. water b. plants c.
soil d. heat
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21. Which of the following would eat a dead
rabbit? a. carnivore b. herbivore c.
decomposer d. omnivore
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22. Which of the following would eat a hamburger
with lettuce on it? a. carnivore b. herbivore c.
detritivore d. omnivore
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23. Photosynthesis uses all of the following
except _____ to make food. a. carbon dioxide b.
light energy c. chemical energy d. water
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24. Which of the following flows through
ecosystems in one direction? a. carbon b.
nitrogen c. energy d. water
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25. How is energy lost that is not used for life
processes? a. potential energy b. thermal
energy c. kinetic energy d. chemical energy
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26. Which is most likely the first step in a
basic food chain? a. The snake obtains energy by
eating the mouse. b. Plants make energy-rich food
using sunlight. c. The Sun emits energy. d. The
hawk obtains energy by eating the snake.  
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27. Which of the following steps is second in
this food chain? a. The snake obtains energy by
eating the mouse. b. Plants make energy-rich food
using sunlight. c. The Sun emits energy. d. The
hawk obtains energy by eating the snake.
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27. Which of the following steps is second in
this food chain? a. The snake obtains energy by
eating the mouse. b. Plants make energy-rich food
using sunlight. c. The Sun emits energy. d. The
hawk obtains energy by eating the snake.
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28. What is one reason that a food web might be a
better description of an ecosystem than a food
chain? a. Animals have only one option of what to
eat. b. At least one animal in the web has webbed
feet. c. No animals are chained. d. Organisms
have a choice of what to eat.
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29. In the food web, which level has the highest
energy? a. diatoms b. leopard seal c. squid d.
orca
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30. In the food web, what eats the squid? a.
diatoms b. leopard seal c. squid d. orca
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31. Which of the following organisms would NOT be
in the first trophic level of an energy
pyramid? a. dog b. grass c. tree d. flower
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32. Which of the following eats animals? a.
carnivore b. bacteria c. herbivore d. fungi
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33. As you move upward, from level to level, in
an energy pyramid, energy ____. a. decreases b.
stays at the same level c. increases d. is
destroyed
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34. Which best describes the energy conversion
that takes place during photosynthesis? A. 
Radiant energy is converted into chemical
energy.B.  Radiant energy is converted into
light energy.C.  Radiant energy is converted
into kinetic energy.D.  Radiant energy is
converted into thermal energy.
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35. During which process is radiant energy from
the Sun transferred into chemical
energy?           A.  Respiration          B. 
Condensation          C.  Evaporation          D
.  Photosynthesis
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36. The diagram shows a plant cell. Which cell
structure contains the pigment needed for
photosynthesis?           A.  cell
wall          B.  cytoplasm          C. 
nucleus          D.  chloroplast
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37. What is missing in the ecosystem shown in
this illustration? A.  the original source of the
energy used by all the living thingsB. 
decomposersC.  consumersD.  feeding
relationships
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38. Look at the picture of a plant life cycle.
During which stage of this cycle would you expect
decomposers to be most active?A.  Stage 1
B.  Stage 2C.  Stage 3 D.  Stage 4
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39. You are drawing a diagram about forest
ecosystems. What do you write in the blank
circle?           A.  Tree absorbs nutrients
from soil          B.  Decomposers eat
leaves          C.  Food is made in
leaves          D.  Atoms in leaves cease to
exist
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40. This diagram models _______ in forest
ecosystems.           A.  redwood
trees          B.  the cycle of
matter          C.  the flow of
energy          D.  the activity of decomposers
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41. What type of organism always makes up the
base of an energy pyramid?           A. 
producer          B.  decomposer          C. 
primary consumer          D.  secondary consumer
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42. The diagram shows an energy pyramid. Which of
the following statements is true of the
owl?   A.  The owl is the source of energy for
the energy pyramid.  B.  The owl gets energy
from eating producers.  C.  The owl is not a
consumer.  D.  The owl has less energy available
to it than do the mice or rabbits.
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42. Energy pyramids represent trophic levels. In
most ecosystems, the organisms in the bottom
trophic level get their energy           A.  by
breaking down the remains of dead plants and
animals.          B.  from the
Sun.          C.  by eating consumers.          
D.  by eating producers.
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43. The diagram shows a food web. What do the
arrows indicate?           A.  the breakdown of
the remains of dead organisms in an
ecosystem          B.  the recycling of energy
through ecosystems          C.  the flow of
energy from one organism to another          D. 
the flow of heat from one organism to another
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44. The shape of an energy pyramid is related to
the           A.  amount of energy available at
each trophic level.          B.  number of
organisms living in an ecosystem.          C. 
weight of living material at each trophic
level.          D.  diversity of organisms in an
ecosystem.
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45. Look at the diagram of a food web. Which of
the following is a food chain within that food
web?           A.  rabbit ? mouse ? grass ?
owl          B.  snake ? grass ? mouse ?
owl          C.  grass ? rabbit ? snake ?
owl          D.  grass ? owl ? snake ? rabbit
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46.  The list below shows different types of
organisms found in a food web.   I. Producers  
II. Primary consumers III. Secondary
consumers IV. Decomposers Which organism is
able to obtain food from all the other organisms
in the chart?           A.  producer          B.
  primary consumer          C.  secondary
consumer          D.  decomposer
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47. How does energy move in a food
chain?           A.  from producers to primary
consumers to secondary consumers          B. 
from primary consumers to producers to secondary
consumers          C.  from producers to
secondary consumers to primary consumers         
 D.  from secondary consumers to primary
consumers to producers
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48. Both food webs and energy pyramids are ways
of showing that energy           A.  is recycled
between organisms and their environment.         
 B.  is created by producers and
consumers.          C.  flows from producers to
consumers.          D.  flows from consumers to
producers.
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49. The diagram shows an Arctic food web. Which
of the following statements is true of both polar
bears and the whales?A.  They are producers.B. 
They are secondary consumers.C.  They both eat
seals.D.  They both eat krill.
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50. Which organism is a primary
consumer?           A.  elephant          B. 
lion          C.  hyena          D.  cheetah
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51. Which organism is a tertiary
consumer?           A.  butterfly          B. 
mountain lion          C.  cactus          D. 
antelope
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52. Which force must a seedling work against to
emerge from the ground?           A. 
gravity          B.  magnetism          C. 
turgor pressure          D.  mass
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53. What causes the tiny roots of a seedling to
grow downward as they emerge from a
seed?           A.  water          B. 
light          C.  gravity          D.  soil
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54. When a seedling begins to emerge from a seed
that is planted, what determines the direction
the seedling will grow?           A. 
gravity          B.  water          C. 
soil          D.  its stem
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55. In class, your group has been asked to plant
a bean, a grain, and a daisy seed. You will then
water them regularly with equal amounts of water
and record their growth over the following four
weeks. After the four weeks, you will report to
the class on your observations. In the
course of the experiment, three seedlings begin
to grow in the paper cups. What caused the
seedlings to sprout out of the bean, grain, and
daisy seed?A.  They are trying to find
nutrients.B.  Warmth from the Sun caused the
bean, grain, and daisy seed to crack.C. 
Pressure in the soil caused the bean, grain, and
daisy seed to burst.D.  Cells in the bean,
grain, and daisy seed grew, causing the seeds to
break open.
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56. In class, your group has been asked to plant
a bean, a grain, and a daisy seed. You will then
water them regularly with equal amounts of water
and record their growth over the following four
weeks. After the four weeks, you will report to
the class on your observations. When you
present your findings, which of the following
will be most useful to show the class differences
in how the three plants grew?           A. 
Labeled drawings          B.  Tables and
graphs          C.  3-D scale models          D.
  Mathematical equations
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57. The roots of plants grow downward because
          A.  they respond to Earths
gravity          B.  that is where the soil
is          C.  they are heavier than the rest
of the plant          D.  they are searching for
water
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58. One morning on the way to school, you notice
that the plants in your neighbors garden are
looking limp and slumped over. While you are at
school, it rains. When you pass the garden in the
evening, you see that all the plants are standing
fully upright again. Which of the following best
explains this change?  A.  The plants have
turned toward the Sun. B.  The plant shoots are
growing away from Earths gravity. C.  Your
neighbor has supported the plants with
stakes.? D.  Water from the rain has filled the
plants cells.
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59. Which biome would best support all the
organisms shown in the food web
above?           A.  Ocean          B. 
Estuary          C.  Pond or lake          D. 
Fast-moving stream
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60. Which of the following types of plants would
be best suited for growing on a forest
floor?           A.  A plant with shallow
roots          B.  A plant that needs lot of
light          C.  A plant with a deep
taproot          D.  A plant that lives in shade
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61. How do hummingbirds, bees, butterflies, and
other animals that eat nectar help the plants
from which they feed?           A.  They keep
the plants free of aphids, mites, and other
insect pests.          B.  Their movements clean
the petals of the flowers.          C.  They
carry pollen from flower to flower, helping
plants make seeds.          D.  They carry
nectar from flower to flower, helping plants
reproduce.
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62. In an ecosystem, why are decomposers
important?           A.  Consumers eat
them.          B.  They make food for
producers.          C.  They make food for
consumers.          D.  They release nutrients
into the soil.
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63. What is the primary function of a dichotomous
key?           A.  to give an organism its
scientific name          B.  to locate an
organism in its ecosystem          C.  to
classify an organism          D.  to identify an
organism
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64. Look at the picture below. Use the
dichotomous key to identify what kind of insect
it is.           A.  Dragonfly          B. 
Grasshopper          C.  Housefly          D. 
Ladybug
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65. Use the dichotomous key provided to answer
this question What kind of organism is this?
A.  AntB.  Black widow spider C.  Gypsy
mothD.  Monarch butterfly
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66. Four species are shown. Which species has
traits that increase its ability to survive and
reproduce in a cold Arctic climate?           A. 
Species A          B.  Species B          C. 
Species C          D.  Species D
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67. Frogs have webbed feet that help them to swim
in water. Webbed feet in frogs are an example of
a(n)           A.  niche          B. 
variation          C.  adaptation          D. 
learned behavior
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68. These moths are members of the same species.
Predict which moth will most likely survive and
why. A.  the dark-colored moth because it can
better hide from predatorsB.  the light-colored
moth because it can find food more easilyC.  the
dark-colored moth because it can find shelter
more easilyD.  the light-colored moth because it
will attract more mates
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69. Which of the following is an adaptation that
allows a flowering plant to reproduce while
remaining stationary?           A. 
stomata          B.  roots          C. 
pollen          D.  stem
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70. Which of the following organisms does not
contain adaptations to handle a desert
climate?A.  rabbitB.  owlC.  cactusD.  dolphin
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71. Organisms such as the cactus shown here have
adaptations that allow them to survive and
reproduce. What adaptation helps to protect the
cactus from being harmed by other organisms?
A.  its color B.  its spines C.  its large
size D.  its shape
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72. The adaptation of xylem and phloem in trees
function in a manner similar to the human
          A.  circulatory system          B. 
digestive system           C.  reproductive
system          D.  nervous system
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73. What is the purpose of the xylem structure in
the diagrams below?           A.  Transport
nutrients     B.  Transport water       C. 
Capture sunlight D.  Make energy
proprofs.com
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74. How would you describe phototropism to a
younger student?           A.  It is a plant's
response to touch.          B.  It is a plant's
response to moisture.          C.  It is a
plant's response to light.          D.  It is a
plant's response to gravity.
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75. How would you describe phototropism to a
younger student?           A.  It is a plant's
response to touch.          B.  It is a plant's
response to moisture.          C.  It is a
plant's response to light.          D.  It is a
plant's response to gravity.
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76. Phototropism is one way that plants respond
to their environment. Which of the following is
an example of positive phototropism?           A.
  a movement toward a touch          B.  a
movement away from water          C.  a movement
toward light          D.  a movement away from a
hot surface
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77. Which process is affecting the angle of
growth of this plant?           A. 
Phototropism          B.  Geotropism          C.
  Gravitropism          D.  Megatropism
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78. Which part of the cell is responsible for
photosynthesis?           A.  Mitochondria       
   B.  Vacuole          C.  Chloroplast         
 D.  Nucleus
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79. Which part of the cell is responsible for
making sugars?           A.  Mitochondria        
  B.  Vacuole          C.  Chloroplast          
D.  Nucleus
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80. Which part of the cell is responsible for
making energy?           A.  Mitochondria        
  B.  Vacuole          C.  Chloroplast          
D.  Nucleus
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yellowtang.org
81. What is the function of this cell
structure?           A.  Make energy          B. 
Make glucose          C.  Store food, water,
waste          D.  Control Center
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yellowtang.org
82. What is the function of this cell
structure?           A.  Make energy          B. 
Make glucose          C.  Store food, water,
waste          D.  Control Center
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yellowtang.org
83. What is the function of this cell
structure?           A.  Make energy          B. 
Make glucose          C.  Store food, water,
waste          D.  Control Center
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Right
Left
sun.menloschool.org
84. What effect will the cell on the right have
on the structure of the plant?           A. 
Leaves will be wilted          B.  Leaves will
be sturdy          C.  Leaves will
swell          D.  Leaves will release more
oxygen
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Left
Right
sun.menloschool.org
85. What effect will the cell on the left have on
the structure of the plant?           A.  Leaves
will be wilted          B.  Leaves will be
sturdy          C.  Leaves will
swell          D.  Leaves will release more
oxygen
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Left
Right
sun.menloschool.org
86. Which plant exhibits more has more turgor
pressure in the vacuoles of its
cells?           A.  Left Diagrams          B. 
Right Diagrams          C.  All Diagrams
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87. Name that biome!
http//www.mbgnet.net/sets/taiga/index.htm

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest

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88. Name that biome!
http//www.mbgnet.net/sets/taiga/index.htm

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest

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89. Name that biome!
http//www.mbgnet.net/sets/taiga/index.htm

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest

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90. Name that biome!
http//www.mbgnet.net/sets/taiga/index.htm

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest

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91. Name that biome!
websters-dictionary-online.com

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest

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92. Name that biome!
windows2universe.org
alaska-in-pictures.com

• Tundra
• Taiga
• C. Grassland
• E. Temperate Deciduous Forest
• F. Temperate Rainforest
• G. Tropical Rainforest