Question 1

Which area has many naturally acidic lakes?

Accepted Answer

A)  Norway 
B)  New York 
C)  Florida 
D)  Ohio 
E)  Sweden 
A)  Norway 
B)  New York 
C)  Florida 
D)  Ohio 
E)  Sweden C

Question 2

The optimal pH range for freshwater fish and aquatic invertebrates is

Accepted Answer

A)  0-3 
B)  3-6 
C)  6-9 
D)  9-12 
E)  12-15 
A)  0-3 
B)  3-6 
C)  6-9 
D)  9-12 
E)  12-15 B

Question 3

Acid rain can lower soil pH in terrestrial systems resulting in the lessening of which nutrients?

Accepted Answer

A)  Calcium and potassium 
B)  Nitrogen and sodium 
C)  Nitrogen and calcium 
D)  Iron and copper 
E)  Molybdenum and manganese 
A)  Calcium and potassium 
B)  Nitrogen and sodium 
C)  Nitrogen and calcium 
D)  Iron and copper 
E)  Molybdenum and manganese C

Question 4

Calciphobes grow only in acid soils.

Accepted Answer

A) True 
 B)False

Question 5

Water is incompressible.

Accepted Answer

A) True 
 B)False

Question 6

How will global warming affect global precipitation patterns?

Accepted Answer

A)  Rainfall will increase everywhere 
B)  Rainfall will decrease everywhere 
C)  Rainfall will increase over dry areas and decrease over wet areas 
D)  Rainfall will increase over wet areas and decrease over dry areas 
A)  Rainfall will increase everywhere 
B)  Rainfall will decrease everywhere 
C)  Rainfall will increase over dry areas and decrease over wet areas 
D)  Rainfall will increase over wet areas and decrease over dry areas

Question 7

Over the 20th century the pH of seawater has decreased by:

Accepted Answer

A)  0.001 
B)  0.01 
C)  0.1 
D)  0.2 
E)  1.0 
A)  0.001 
B)  0.01 
C)  0.1 
D)  0.2 
E)  1.0

Question 8

Which type(s) of organisms have to deal with too much water?

Accepted Answer

A)  marine fish. 
B)  freshwater fish. 
C)  terrestrial plants. 
D)  terrestrial animals. 
E)  all of the above. 
A)  marine fish. 
B)  freshwater fish. 
C)  terrestrial plants. 
D)  terrestrial animals. 
E)  all of the above.

Question 9

Which vertebrates ingest salt water and expel it through salt glands?

Accepted Answer

A)  Whales 
B)  Dolphins 
C)  Sea snakes 
D)  Marine turtles and sea birds 
E)  Walruses 
A)  Whales 
B)  Dolphins 
C)  Sea snakes 
D)  Marine turtles and sea birds 
E)  Walruses

Question 10

Which of the following is a naturally occurring weak acid?

Accepted Answer

A)  Hydrochloric acid 
B)  Carbonic acid 
C)  Sodium hydroxide 
D)  Sulfuric acid 
A)  Hydrochloric acid 
B)  Carbonic acid 
C)  Sodium hydroxide 
D)  Sulfuric acid

Question 11

Most plants grow best at a soil water pH of 6.5 because

Accepted Answer

A)  normal rainwater is slightly acidic. 
B)  soil nutrients are most available to plants at this pH. 
C)  soil bacteria do not function well at a pH of less than 6.5. 
D)  most roots are killed a pH above 6.5. 
A)  normal rainwater is slightly acidic. 
B)  soil nutrients are most available to plants at this pH. 
C)  soil bacteria do not function well at a pH of less than 6.5. 
D)  most roots are killed a pH above 6.5.

Question 12

Ammonia is toxic so most organisms that produce it are terrestrial.

Accepted Answer

A) True 
 B)False

Question 13

Inland lakes are never salty.

Accepted Answer

A) True 
 B)False

Question 14

Some plants accumulate inorganic salts in their vacuoles, balancing solute concentrations inside and outside of the cell and preventing osmotic water loss. Such plants could live in environments with

Accepted Answer

A)  low temperatures. 
B)  high salt concentrations. 
C)  low salt concentrations. 
D)  high temperatures. 
E)  acid soils. 
A)  low temperatures. 
B)  high salt concentrations. 
C)  low salt concentrations. 
D)  high temperatures. 
E)  acid soils.

Question 15

To estimate relative water content which three measures are needed?

Accepted Answer

A)  Turgid weight, osmotic potential and wet weight 
B)  Turgor pressure, fresh weight and dry weight 
C)  Fresh weight, dry weight and turgid weight 
D)  Solute concentration, dry weight and wet weight 
E)  Fresh weight, turgid weight and osmotic potential 
A)  Turgid weight, osmotic potential and wet weight 
B)  Turgor pressure, fresh weight and dry weight 
C)  Fresh weight, dry weight and turgid weight 
D)  Solute concentration, dry weight and wet weight 
E)  Fresh weight, turgid weight and osmotic potential

Question 16

On a mountainside, the tree line is set by a combination of

Accepted Answer

A)  high temperature and high winds. 
B)  water uptake and evaporation. 
C)  low temperature and low winds. 
D)  high temperature and low transpiration. 
E)  low temperature and high winds. 
A)  high temperature and high winds. 
B)  water uptake and evaporation. 
C)  low temperature and low winds. 
D)  high temperature and low transpiration. 
E)  low temperature and high winds.

Question 17

Which nitrogenous waste product is so toxic that animals need to excrete it immediately?

Accepted Answer

A)  Ammonia 
B)  Urea 
C)  Uric acid 
D)  Purines 
E)  Urohydrosis 
A)  Ammonia 
B)  Urea 
C)  Uric acid 
D)  Purines 
E)  Urohydrosis

Question 18

Increased lake acidity can interfere with gill function in fish because of increases in which toxic metals?

Accepted Answer

A)  Mercury and copper 
B)  Copper and phosphorus 
C)  Aluminum and mercury 
D)  Copper and lead 
E)  Lead and aluminum 
A)  Mercury and copper 
B)  Copper and phosphorus 
C)  Aluminum and mercury 
D)  Copper and lead 
E)  Lead and aluminum

Question 19

Why is rainwater slightly acidic?

Accepted Answer

A)  it contains hydrochloric acid 
B)  it contains ammonia. 
C)  it contains carabonic acid. 
D)  it contains bicarbonate. 
A)  it contains hydrochloric acid 
B)  it contains ammonia. 
C)  it contains carabonic acid. 
D)  it contains bicarbonate.

Question 20

'Hard' water is generally rich in which ions?

Accepted Answer

A)  Calcium 
B)  Magnesium 
C)  Potassium 
D)  Sodium 
E)  Sulfur 
A)  Calcium 
B)  Magnesium 
C)  Potassium 
D)  Sodium 
E)  Sulfur

Exam 6: Water

Which area has many naturally acidic lakes?

The optimal pH range for freshwater fish and aquatic invertebrates is

Acid rain can lower soil pH in terrestrial systems resulting in the lessening of which nutrients?

Calciphobes grow only in acid soils.

Water is incompressible.

How will global warming affect global precipitation patterns?

Over the 20th century the pH of seawater has decreased by:

Which type(s) of organisms have to deal with too much water?

Which vertebrates ingest salt water and expel it through salt glands?

Which of the following is a naturally occurring weak acid?

Most plants grow best at a soil water pH of 6.5 because

Ammonia is toxic so most organisms that produce it are terrestrial.

Inland lakes are never salty.

Some plants accumulate inorganic salts in their vacuoles, balancing solute concentrations inside and outside of the cell and preventing osmotic water loss. Such plants could live in environments with

To estimate relative water content which three measures are needed?

On a mountainside, the tree line is set by a combination of

Which nitrogenous waste product is so toxic that animals need to excrete it immediately?

Increased lake acidity can interfere with gill function in fish because of increases in which toxic metals?

Why is rainwater slightly acidic?

'Hard' water is generally rich in which ions?

An Introduction to Ecology

Population Genetics

Natural Selection, Speciation, and Extinction

Behavioral Ecology

Temperature

Nutrients

Demographic Techniques and Population Patterns

Life Tables and Demography

Population Growth

Competition and Coexistence

Facilitation

Predation

Herbivory

Parasitism

Population Regulation

Species Diversity

Species Richness Patterns

Species Richness and Community Services

Succession

Island Biogeography

Terrestrial Biomes

Marine Biomes

Freshwater Biomes

Food Webs and Energy Flow

Biomass Production

Biogeochemical Cycles

Filters