Question 1

What climatological phenomenon is the result of the Earth's tilted axis?

Accepted Answer

A) day and night 
B) snow 
C) drought 
D) seasons 
E) clouds 
A) day and night 
B) snow 
C) drought 
D) seasons 
E) clouds

Question 2

Which greenhouse gas also destroys the ozone layer?

Accepted Answer

A) chlorofluorocarbons 
B) carbon dioxide 
C) nitrous oxide 
D) methane 
E) oxygen 
A) chlorofluorocarbons 
B) carbon dioxide 
C) nitrous oxide 
D) methane 
E) oxygen

Question 3

Which of the following occurs fourth in the eutrophication process?

Accepted Answer

A) Bacteria use oxygen to decompose plant material. 
B) Prolific plant and algal growth occurs. 
C) Nutrients enter the body of water. 
D) A drop in oxygen occurs that may cause a fish kill. 
E) Plants and algae die during winter months. 
A) Bacteria use oxygen to decompose plant material. 
B) Prolific plant and algal growth occurs. 
C) Nutrients enter the body of water. 
D) A drop in oxygen occurs that may cause a fish kill. 
E) Plants and algae die during winter months.

Question 4

The polar ice caps are not considered biomes because they

Accepted Answer

A) lack any major plant communities. 
B) do not sustain animals and bacteria. 
C) are located outside of areas that can be considered as biomes. 
D) are too cold for any life. 
E) melt and refreeze on a regular basis. 
A) lack any major plant communities. 
B) do not sustain animals and bacteria. 
C) are located outside of areas that can be considered as biomes. 
D) are too cold for any life. 
E) melt and refreeze on a regular basis.

Question 5

Explain how an herbivore, carnivore, omnivore and detritivore are similar.

Accepted Answer

All are heterotrophs/consumers

Question 6

Primary consumers are found at

Accepted Answer

A) the lowest trophic level. 
B) the highest trophic level. 
C) the second trophic level. 
D) all trophic levels. 
E) the third trophic level. 
A) the lowest trophic level. 
B) the highest trophic level. 
C) the second trophic level. 
D) all trophic levels. 
E) the third trophic level.

Question 7

The amount of energy stored in plant tissue is an ecosystem's

Accepted Answer

A) gross primary productivity. 
B) net primary productivity. 
C) biomass ratio. 
D) greenhouse cofactor. 
E) production limit. 
A) gross primary productivity. 
B) net primary productivity. 
C) biomass ratio. 
D) greenhouse cofactor. 
E) production limit.

Question 8

In tropical forests, the vast majority of water returning to the atmosphere is through

Accepted Answer

A) evaporation from the leaves of plants. 
B) sweat from animals. 
C) evaporation of urine secreted by animals. 
D) evaporation from puddles and ponds. 
E) evaporation from rivers and lakes. 
A) evaporation from the leaves of plants. 
B) sweat from animals. 
C) evaporation of urine secreted by animals. 
D) evaporation from puddles and ponds. 
E) evaporation from rivers and lakes.

Question 9

In the water cycle approximately what percent of water evaporates from the surfaces of plant leaves?

Accepted Answer

A) 10 
B) 22 
C) 48 
D) 70 
E) 90 
A) 10 
B) 22 
C) 48 
D) 70 
E) 90

Question 10

Coniferous forests are found across Canada and northern Europe. How have conifers adapted to minimize water loss through evaporation and handle the short growing seasons in these regions?

Accepted Answer

Conifers minimize water loss by minimizi

Question 11

A mountain stream can be divided into several sections. In each of these sections the biological diversity varies greatly. What factors influence the diversity in this mountain stream?

Accepted Answer

The most important factors inf

Question 12

What organisms convert gaseous nitrogen into ammonium or nitrates that can be used by plants?

Accepted Answer

A) tertiary consumers 
B) nitrogen-fixing bacteria 
C) fish 
D) legumes 
E) corn and other grains 
A) tertiary consumers 
B) nitrogen-fixing bacteria 
C) fish 
D) legumes 
E) corn and other grains

Question 13

A toxic material that has the potential to accumulate in the fat tissue of animals is accidentally released into an ecosystem. Plants and animals in this system include red-tailed hawks, mice, corn, and weasels. Arrange the organisms in order according to the level of toxins that they would be expected to accumulate.

Accepted Answer

Higher concentrations of the t

Question 14

Match between columns
                        Premises: Broad-leaved trees
Succulent plants with fleshy stems and spines
Dominated by grasses
Cone-bering trees
Tree-less area that contains permafrost

Accepted Answer

The Answer of prairie and tundra and chaparral and desert is...

Question 15

Plants and algae need phosphates for growth. Many fish and other animals feed on aquatic plants and algae. Why, then, is an excess of phosphates in the water (eutrophication)harmful to the organisms in a lake?

Accepted Answer

Responses should discuss the o

Question 16

The most probable consequence of ozone depletion is

Accepted Answer

A) global warming. 
B) an increase in skin cancers. 
C) eutrophication. 
D) fish kills in shallow lakes. 
E) groundwater contamination. 
A) global warming. 
B) an increase in skin cancers. 
C) eutrophication. 
D) fish kills in shallow lakes. 
E) groundwater contamination.

Question 17

Match between columns
                        Premises: Grasses present with widely dispersed trees
Known as prairies in North America and pampas in South America
Consists of vast forests of pine, fir, spruce, and hemlock trees
Soil ustally low in nutrients due to heavy rains
Characterized by hot, dry summers and cool, wet winters

Accepted Answer

The Answer of temperate grassland and tundm and tropical rainforest is...

Question 18

Which of the following are cycled in an ecosystem?

Accepted Answer

A) carbon 
B) heat 
C) phosphorous 
D) carbon and heat 
E) carbon and phosphorous 
A) carbon 
B) heat 
C) phosphorous 
D) carbon and heat 
E) carbon and phosphorous

Question 19

Edith's checkerspot butterflies are considered "indicator species" because they

Accepted Answer

A) can determine the make up of the community of organisms through predation. 
B) are signals for the presence of predators that prey on the butterflies. 
C) are important signals of ecological change. 
D) are only present during certain seasons. 
E) indicate when food supplies are low by changing their behavior. 
A) can determine the make up of the community of organisms through predation. 
B) are signals for the presence of predators that prey on the butterflies. 
C) are important signals of ecological change. 
D) are only present during certain seasons. 
E) indicate when food supplies are low by changing their behavior.

Question 20

The state of Iowa is in the temperate grassland (prairie)while much of the neighboring state of Wisconsin is in the deciduous forest. Why are these two states in different biomes?

Accepted Answer

The best answers should include a discus

Exam 15: Ecosystems and the Biosphere

What climatological phenomenon is the result of the Earth's tilted axis?

Which greenhouse gas also destroys the ozone layer?

Which of the following occurs fourth in the eutrophication process?

The polar ice caps are not considered biomes because they

Explain how an herbivore, carnivore, omnivore and detritivore are similar.

Primary consumers are found at

The amount of energy stored in plant tissue is an ecosystem's

In tropical forests, the vast majority of water returning to the atmosphere is through

In the water cycle approximately what percent of water evaporates from the surfaces of plant leaves?

Coniferous forests are found across Canada and northern Europe. How have conifers adapted to minimize water loss through evaporation and handle the short growing seasons in these regions?

A mountain stream can be divided into several sections. In each of these sections the biological diversity varies greatly. What factors influence the diversity in this mountain stream?

What organisms convert gaseous nitrogen into ammonium or nitrates that can be used by plants?

Plants and algae need phosphates for growth. Many fish and other animals feed on aquatic plants and algae. Why, then, is an excess of phosphates in the water (eutrophication)harmful to the organisms in a lake?

The most probable consequence of ozone depletion is

Which of the following are cycled in an ecosystem?

Edith's checkerspot butterflies are considered "indicator species" because they

The state of Iowa is in the temperate grassland (prairie)while much of the neighboring state of Wisconsin is in the deciduous forest. Why are these two states in different biomes?

What Is Life

Cells and the Chemistry of Life

How Cells Take in and Use Energy

The Cell Cycle

Patterns of Inheritance

DNA: The Thread of Life

Genes, Proteins, and Genetic Engineering

Reproduction and Development

The Mechanisms of Evolution

Lifes Origins and Biodiversity

Single-Celled Life

Fungi and Plants: Decomposers and Producers

The Evolution and Diversity of Animals

Ecology of Populations and Communities

Body Function, Survival, and the Steady State

Circulation and Respiration

Defense Against Disease

Animal Nutrition and Digestion

Hormones: Messengers of Change

The Nervous System

The Body in Motion

Plant Architecture and Function

Plant Growth, Hormones, and Engineering

The Dynamic Plant

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