Question 1

Biomagnification is a significant problem in aquatic communities. The amounts of chemicals magnify (increase or accumulate)  at each new link in a food chain. Use the following information to calculate the level of chemical X in the large-mouth bass. One small plant can accumulate 1 unit of chemical X. A microscopic animal eats 15 small plants. A minnow consumes 10 microscopic animals, a large-mouth bass consumes 20 minnows.

Accepted Answer

A)   15 units of chemical X
B)   30 units of chemical X
C)   150 units of chemical X
D)   300 units of chemical X
E)   3,000 units of chemical XF) All of the above
G) A) and B) E

Question 2

Which group of organisms is responsible for primary production in a freshwater lake?

Accepted Answer

A)   phytoplankton
B)   aquatic grasses
C)   submerged plants
D)   photosynthetic bacteria
E)   mossF) A) and B)
G) B) and D)

Question 3

The changes in the average temperature of the Earth's surface is known as

Accepted Answer

A)   climate change
B)   greenhouse gases
C)   global warming
D)   ozone depletionE) None of the above
F) B) and C)

Question 4

What is the primary source of energy for organisms that live in the deep sea?

Accepted Answer

A)   sunlight
B)   chemical energy
C)   cellular respiration
D)   inorganic metabolismE) C) and D)
F) A) and B) A

Question 5

If a 2200 kg whale were to die, how much of it would be consumed before it reaches the organisms that lie on the ocean floor?

Accepted Answer

A)   1200 kg
B)   2178 kg
C)   420 kg
D)   220 kg
E)   22 kgF) B) and C)
G) C) and E)

Question 6

A decrease in the concentration of which of the following components would have the greatest impact upon a freshwater community?

Accepted Answer

A)   nitrogen
B)   calcium
C)   oxygen
D)   carbon
E)   sodiumF) All of the above
G) B) and E)

Question 7

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Accepted Answer

A)   The affects of global warming will be uniform throughout the world.
B)   In addition to carbon dioxide, other greenhouse gases include methane and nitrous oxide.
C)   Melting of the Artic permafrost will slow the process of global warming because of new plant growth in those areas.
D)   The effects of global warming can be measured today.
E)   Carbon dioxide absorbs short wavelength radiant energy better than long wavelength radiant energy.F) A) and E)
G) A) and D)

Question 8

Oxygen levels in the photic zone fluctuate over the course of a 24-hr period. If you were measuring dissolved oxygen over the course of the day, when would you expect to see the lowest levels of oxygen and why?

Accepted Answer

A)   Mid-morning -- because fish are most active and their respiration rates are highest.
B)   Early afternoon -- when the surface water warms up and sinks to the bottom.
C)   Mid-afternoon -- because the activity of the Calvin cycle (the dark reactions)  of photosynthesis are at their peak.
D)   Early evening -- when animals come to feed and disturb the surface waters.
E)   During the night -- because the light reactions of photosynthesis are inactive.F) B) and C)
G) A) and B)

Question 9

Biomes are broad regional areas with defined flora and fauna. Which one of the following choices correctly identifies the biomes shown plotted in the included graph of precipitation versus temperature?

Accepted Answer

A)   Tropical Rain forest = 1; Desert = 2; Tundra = 3; Grassland = 4
B)   Tropical Rain forest = 1; Desert = 3; Tundra = 4; Grassland = 2
C)   Tropical Rain forest = 3; Desert = 4; Tundra = 1; Grassland = 2
D)   Tropical Rain forest = 3; Desert = 1; Tundra = 2; Grassland = 3E) A) and D)
F) A) and C) A

Question 10

Which of the following are examples of diffuse pollution? Check all that apply.

Accepted Answer

A)   sediment from poorly managed construction sites, crop and forest lands, and eroding stream banks
B)   wind-borne debris blowing out to sea
C)   pet wastes
D)   oil leaking from a cargo ship
E)   oil, grease and toxic chemicals from urban runoff and energy productionF) B) and E)
G) A) and B)

Question 11

Which of the following choices best describes the relationship that exists between moisture and air temperature?

Accepted Answer

A)   The moisture-holding capacity of air decreases when it is warm and increases when it is cool.
B)   The moisture-holding capacity of air remains the same (warm or cool)  and is not related to its temperature.
C)   The moisture-holding capacity of air increases when it is warm and decreases when it is cool.
D)   The moisture-holding capacity of air decreases as the higher altitude winds of the polar regions descend onto the continents.E) A) and D)
F) A) and C)

Question 12

Your biology professor takes the class on a field trip to a local lake. As you get out of the van, the professor hands you a notebook and a field test kit. Your assignment is to spend an hour studying the lake and writing down all observations. At the end of the hour, the professor asks you to hypothesize if the lake is eutrophic or oligotrophic. Looking at the observations you recorded, you hypothesize the lake is oligotrophic. Which of the following observations support your hypothesis? Check all that apply.

Accepted Answer

A)   The shoreline is mostly rock and sand with very little vegetative matter.
B)   The lake has extensive aquatic plant beds.
C)   The lake has little planktonic growth.
D)   The bottom of the lake is easily visible.
E)   An oxygen probe reveals low oxygen content in the water.F) A) and E)
G) C) and D)

Question 13

Which of the following statements about ozone depletion are true? Check all that apply.

Accepted Answer

A)   Concentrations of ozone-depleting chemicals continue to rise in the atmosphere.
B)   Chlorofluorocarbons (CFCs)  are the major cause of ozone depletion.
C)   Free chlorine in the upper atmosphere catalyzes the conversion of O3 into O2.
D)   Weather conditions also influence the size of the ozone hole in the stratosphere.
E)   CFCs are acted on by conditions in the stratosphere to form diatomic chlorine (Cl2) .F) A) and C)
G) A) and B)

Question 14

Which of the following statements best explains why the waters over continental shelves have more nutrients than the open ocean?

Accepted Answer

A)   The waters over continental shelves have more aquatic plants that provide nutrients.
B)   The water over the continental shelves are shallower so the nutrients remain in place.
C)   The open ocean has a greater concentration of consumers that deplete the water of nutrients.
D)   About 99% of seafood harvested by humans comes from the open ocean, this depleting it of its nutrients.
E)   Sunlight penetration is greater over continenntal shelves, making it more nutreint rich.F) B) and C)
G) C) and D)

Question 15

What is predicted to be the increase in the Earth's temperature by the end of the century?

Accepted Answer

A)   2.0 - 11.5 degrees Fahrenheit
B)   4.0 - 10.5 degrees Fahrenheit
C)   1.1 - 6.4 degrees Fahrenheit
D)   8.0 - 13.5 degrees FahrenheitE) All of the above
F) C) and D)

Question 16

You are standing on top of a mountain in Colorado in front of a cannon. You want to fire a cannonball and hit a flag pole that's on the top of another mountain, many miles away but directly North of you. Which direction should you point the cannon before firing?

Accepted Answer

A)   Northwest
B)   North
C)   Northeast
D)   South
E)   SoutheastF)  SouthwestG) E) and F)
H) A) and B)

Question 17

Tropical climates are warmer than temperate climates because

Accepted Answer

A)   temperate climates have more mountains and thus more snow causing the landmasses to warm slower.
B)   tropical climates have more vegetation and thus can absorb more heat.
C)   temperate climates are closer to the poles and the polar surfaces cause a reduction in heat gain.
D)   tropical climates receive the sun's rays at an almost perpendicular angle; since Earth is a sphere, the temperate climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area.
E)   tropical climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area and causing the tropics to be warmer while the temperate climates receive the sun's rays at an almost perpendicular angle, which causes some areas to be warm and other areas to be cold.F) B) and C)
G) A) and B)

Question 18

Which of the following statements about the effects of deforestation on terrestrial ecosystems are true? Check all that apply.

Accepted Answer

A)   At present rates of deforestation, it is predicted that all of the world's tropical rain forests will be degraded or gone within 10 years.
B)   Today, deforestation is one of the greatest problems facing terrestrial ecosystems.
C)   Deforestation usually leads to the over-accumulation of nutrients such as nitrates/nitrites in the soil.
D)   Deforestation can lead to loss of topsoil.
E)   Deforestation can lead to eutrophication of aquatic ecosystems.F) A) and C)
G) A) and B)

Question 19

Which of the following human activities could contribute to the eutrophication of a lake? Check all that apply.

Accepted Answer

A)   burning leaves near a lake
B)   planting trees around the periphery of the lake
C)   washing your hands with soap in the lake
D)   feeding the ducks in the lakeE) A) and B)
F) A) and C)

Question 20

Which statement best describes the relationship between elevation and latitude?

Accepted Answer

A)   Elevation and latitude are related because they are both measurements of distance.
B)   Elevation and latitude are related because as one increases the other increases.
C)   Elevation and latitude are related because they have similar effects on temperature. As the elevation increases, the temperature of the air increases, which is likewise with latitude.
D)   Elevation and latitude are related because they have similar effects on temperature. As the elevation increases, the temperature of the air decreases, which is likewise with latitude.E) C) and D)
F) A) and D)

Exam 35: The Living World

Correct Answer
verified
E

Which group of organisms is responsible for primary production in a freshwater lake?

Correct Answer
verified

The changes in the average temperature of the Earth's surface is known as

Correct Answer
verified

What is the primary source of energy for organisms that live in the deep sea?

Correct Answer
verified
A

If a 2200 kg whale were to die, how much of it would be consumed before it reaches the organisms that lie on the ocean floor?

Correct Answer
verified

A decrease in the concentration of which of the following components would have the greatest impact upon a freshwater community?

Correct Answer
verified

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Correct Answer
verified

Oxygen levels in the photic zone fluctuate over the course of a 24-hr period. If you were measuring dissolved oxygen over the course of the day, when would you expect to see the lowest levels of oxygen and why?

Correct Answer
verified

Biomes are broad regional areas with defined flora and fauna. Which one of the following choices correctly identifies the biomes shown plotted in the included graph of precipitation versus temperature?

Correct Answer
verified
A

Which of the following are examples of diffuse pollution? Check all that apply.

Correct Answer
verified

Which of the following choices best describes the relationship that exists between moisture and air temperature?

Correct Answer
verified

Correct Answer
verified

Which of the following statements about ozone depletion are true? Check all that apply.

Correct Answer
verified

Which of the following statements best explains why the waters over continental shelves have more nutrients than the open ocean?

Correct Answer
verified

What is predicted to be the increase in the Earth's temperature by the end of the century?

Correct Answer
verified

You are standing on top of a mountain in Colorado in front of a cannon. You want to fire a cannonball and hit a flag pole that's on the top of another mountain, many miles away but directly North of you. Which direction should you point the cannon before firing?

Correct Answer
verified

Tropical climates are warmer than temperate climates because

Correct Answer
verified

Which of the following statements about the effects of deforestation on terrestrial ecosystems are true? Check all that apply.

Correct Answer
verified

Which of the following human activities could contribute to the eutrophication of a lake? Check all that apply.

Correct Answer
verified

Which statement best describes the relationship between elevation and latitude?

Correct Answer
verified

Exam 35: The Living World

Correct AnswerverifiedE

Which group of organisms is responsible for primary production in a freshwater lake?

Correct AnswerverifiedShow Answer

The changes in the average temperature of the Earth's surface is known as

Correct AnswerverifiedShow Answer

What is the primary source of energy for organisms that live in the deep sea?

Correct AnswerverifiedA

If a 2200 kg whale were to die, how much of it would be consumed before it reaches the organisms that lie on the ocean floor?

Correct AnswerverifiedShow Answer

A decrease in the concentration of which of the following components would have the greatest impact upon a freshwater community?

Correct AnswerverifiedShow Answer

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Correct AnswerverifiedShow Answer

Oxygen levels in the photic zone fluctuate over the course of a 24-hr period. If you were measuring dissolved oxygen over the course of the day, when would you expect to see the lowest levels of oxygen and why?

Correct AnswerverifiedShow Answer

Biomes are broad regional areas with defined flora and fauna. Which one of the following choices correctly identifies the biomes shown plotted in the included graph of precipitation versus temperature?

Correct AnswerverifiedA

Which of the following are examples of diffuse pollution? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following choices best describes the relationship that exists between moisture and air temperature?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following statements about ozone depletion are true? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following statements best explains why the waters over continental shelves have more nutrients than the open ocean?

Correct AnswerverifiedShow Answer

What is predicted to be the increase in the Earth's temperature by the end of the century?

Correct AnswerverifiedShow Answer

You are standing on top of a mountain in Colorado in front of a cannon. You want to fire a cannonball and hit a flag pole that's on the top of another mountain, many miles away but directly North of you. Which direction should you point the cannon before firing?

Correct AnswerverifiedShow Answer

Tropical climates are warmer than temperate climates because

Correct AnswerverifiedShow Answer

Which of the following statements about the effects of deforestation on terrestrial ecosystems are true? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following human activities could contribute to the eutrophication of a lake? Check all that apply.

Correct AnswerverifiedShow Answer

Which statement best describes the relationship between elevation and latitude?

Correct AnswerverifiedShow Answer

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E

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A

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A

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