Question 1

Ammonification is the conversion of ______________ to NH3 and NH4

Accepted Answer

A)  Living plant and animal matter 
B)  Nitrites 
C)  Inorganic nitrogen 
D)  Nitrates 
E)  Dead plant and animal matter 
A)  Living plant and animal matter 
B)  Nitrites 
C)  Inorganic nitrogen 
D)  Nitrates 
E)  Dead plant and animal matter E

Question 2

DDT stands for

Accepted Answer

A)  Diethyldiphenyltrichloroethane 
B)  Diethanedichlorotriethylmethane 
C)  Dichlorodiphenyltrichloroethane 
D)  Dibenzyldiethyltrimethylethane 
E)  Diphenyldichlorotriethylmethane 
A)  Diethyldiphenyltrichloroethane 
B)  Diethanedichlorotriethylmethane 
C)  Dichlorodiphenyltrichloroethane 
D)  Dibenzyldiethyltrimethylethane 
E)  Diphenyldichlorotriethylmethane C

Question 3

How does DDT in the environment affect many birds?

Accepted Answer

A)  It poisons them 
B)  It causes chronic liver failure 
C)  It causes egg shell thinning and breaking 
D)  It reduces the number of prey 
E)  It causes neurological degeneration 
A)  It poisons them 
B)  It causes chronic liver failure 
C)  It causes egg shell thinning and breaking 
D)  It reduces the number of prey 
E)  It causes neurological degeneration C

Question 4

Which nutrient does not cycle globally?

Accepted Answer

A)  Carbon 
B)  Water 
C)  Nitrogen 
D)  Phosphorus 
E)  Sulfur 
A)  Carbon 
B)  Water 
C)  Nitrogen 
D)  Phosphorus 
E)  Sulfur

Question 5

The movement of chemicals through ecosystems occurs through

Accepted Answer

A)  Gross primary production 
B)  Biogeochemical cycles 
C)  Geobiochemical cycles 
D)  Biomagnification 
E)  Physiochemical cycles 
A)  Gross primary production 
B)  Biogeochemical cycles 
C)  Geobiochemical cycles 
D)  Biomagnification 
E)  Physiochemical cycles

Question 6

The amount of carbon released into the atmosphere from soil respiration, by microbes, is about the same as the amount of carbon absorbed from the atmosphere by plants.

Accepted Answer

A) True 
 B)False

Question 7

Stiling and Drake conducted experiments about the effects, if any, of elevated CO2 on plant growth and insect herbivory. What did they find?

Accepted Answer

A)  Increased plant growth but no change in insect herbivory 
B)  No change in plant growth but elevated insect herbivory 
C)  Increased plant growth but reduced insect herbivory 
D)  Increased plant growth and increased insect herbivory 
E)  No change in either plant growth or insect herbivory 
A)  Increased plant growth but no change in insect herbivory 
B)  No change in plant growth but elevated insect herbivory 
C)  Increased plant growth but reduced insect herbivory 
D)  Increased plant growth and increased insect herbivory 
E)  No change in either plant growth or insect herbivory

Question 8

If a forested area surrounding a stream is cleared of trees, what has been found to happen?

Accepted Answer

A)  Increased import of nutrients to the soil 
B)  Decreased rates of soil and rock weathering 
C)  Increased run-off of water 
D)  Decreased rates of chemical leaching 
E)  Increased denitrification 
A)  Increased import of nutrients to the soil 
B)  Decreased rates of soil and rock weathering 
C)  Increased run-off of water 
D)  Decreased rates of chemical leaching 
E)  Increased denitrification

Question 9

Atmospheric carbon exhibits a turnover in ___ years.

Accepted Answer

A)  1-2 
B)  3-4 
C)  6-10 
D)  10-20 
E)  20-50 
A)  1-2 
B)  3-4 
C)  6-10 
D)  10-20 
E)  20-50

Question 10

What follows nitrogen fixation in the nitrogen cycle?

Accepted Answer

A)  Nitrification 
B)  Ammonification 
C)  Assimilation 
D)  Denitrification 
E)  Decombustion 
A)  Nitrification 
B)  Ammonification 
C)  Assimilation 
D)  Denitrification 
E)  Decombustion

Ammonification is the conversion of ______________ to NH₃ and NH₄

DDT stands for

How does DDT in the environment affect many birds?

Which nutrient does not cycle globally?

The movement of chemicals through ecosystems occurs through

The amount of carbon released into the atmosphere from soil respiration, by microbes, is about the same as the amount of carbon absorbed from the atmosphere by plants.

Stiling and Drake conducted experiments about the effects, if any, of elevated CO₂ on plant growth and insect herbivory. What did they find?

If a forested area surrounding a stream is cleared of trees, what has been found to happen?

Atmospheric carbon exhibits a turnover in ___ years.

What follows nitrogen fixation in the nitrogen cycle?

An Introduction to Ecology

Population Genetics

Natural Selection, Speciation, and Extinction

Behavioral Ecology

Temperature

Water

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

Filters

Exam 27: Biogeochemical Cycles

Ammonification is the conversion of ______________ to NH3 and NH4

DDT stands for

How does DDT in the environment affect many birds?

Which nutrient does not cycle globally?

The movement of chemicals through ecosystems occurs through

The amount of carbon released into the atmosphere from soil respiration, by microbes, is about the same as the amount of carbon absorbed from the atmosphere by plants.

Stiling and Drake conducted experiments about the effects, if any, of elevated CO2 on plant growth and insect herbivory. What did they find?

If a forested area surrounding a stream is cleared of trees, what has been found to happen?

Atmospheric carbon exhibits a turnover in ___ years.

What follows nitrogen fixation in the nitrogen cycle?

An Introduction to Ecology

Population Genetics

Natural Selection, Speciation, and Extinction

Behavioral Ecology

Temperature

Water

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

Filters

Ammonification is the conversion of ______________ to NH₃ and NH₄

Stiling and Drake conducted experiments about the effects, if any, of elevated CO₂ on plant growth and insect herbivory. What did they find?