Question 1

If a bird eats an insect that ate a plant, the bird is considered a(n):

Accepted Answer

A) autotroph. 
B) primary producer. 
C) primary consumer. 
D) secondary consumer. 
E) tertiary consumer. 
A) autotroph. 
B) primary producer. 
C) primary consumer. 
D) secondary consumer. 
E) tertiary consumer.

Question 2

Ornithologists have noted that Mexican Jays in Arizona are nesting 10 days earlier in the springtime today than they did in the 1970s. They suggest that this behavior is evidence of ________.

Accepted Answer

global war

Question 3

________ are organisms like earthworms and other scavengers that eat waste products and dead organic matter.

Accepted Answer

The answer of ________ are organisms like earthworms and other...

Question 4

Forests along rivers in the Pacific Northwest that have lost their salmon populations are less productive because:

Accepted Answer

A) the dams that prevented the fish from migrating also flooded the forests. 
B) the fishers who over-harvested the salmon compacted the soil in the process. 
C) the global warming that wiped out the fish has also harmed the trees. 
D) the pollution that killed the fish has also directly affected the trees. 
E) the nitrogen the fish brought from the ocean and contained in their tissues has been lost. 
A) the dams that prevented the fish from migrating also flooded the forests. 
B) the fishers who over-harvested the salmon compacted the soil in the process. 
C) the global warming that wiped out the fish has also harmed the trees. 
D) the pollution that killed the fish has also directly affected the trees. 
E) the nitrogen the fish brought from the ocean and contained in their tissues has been lost.

Question 5

What would happen if there were no denitrifying bacteria?

Accepted Answer

The atmosphere would

Question 6

If the plants in a community produce 500 grams of organic matter per square meter per year that is available for animals in the community to eat, this amount of energy is known as the:

Accepted Answer

A) availability factor of the community. 
B) net primary productivity of the community. 
C) consumership of the community. 
D) secondary productivity of the community. 
E) trophic factor of the community. 
A) availability factor of the community. 
B) net primary productivity of the community. 
C) consumership of the community. 
D) secondary productivity of the community. 
E) trophic factor of the community.

Question 7

Iron is a limiting factor in many aquatic ecosystems. If the iron level is increased, the amount of phytoplankton decreases. True or False?

Accepted Answer

A) True 
 B)False

Question 8

Autotrophs use solar energy to build their own complex organic molecules from inorganic compounds such as water and carbon dioxide. True or False?

Accepted Answer

A) True 
 B)False

Question 9

Nitrogen is fixed by soil bacteria and is then incorporated into plant biomass and eventually into the food chain. What process(es)complete the global nitrogen cycle?

Accepted Answer

Decomposers turn the nitrogen in dead pl

Question 10

The global hydrologic cycle begins with precipitation falling to Earth, and the cycle is completed by ________.

Accepted Answer

solar ener

Question 11

In the ________ cycle, water is cycled among the atmosphere, oceans, and living organisms.

Accepted Answer

The answer of In the ________ cycle, water is cycled...

Question 12

Herbivores occupy the trophic level of ________.

Accepted Answer

The answer of Herbivores occupy the trophic level of ________....

Question 13

Detritus feeders consume:

Accepted Answer

A) herbivores. 
B) plants and plant debris. 
C) secondary consumers and primary debris. 
D) dead organic matter. 
E) fungi and bacteria. 
A) herbivores. 
B) plants and plant debris. 
C) secondary consumers and primary debris. 
D) dead organic matter. 
E) fungi and bacteria.

Question 14

It has been said about global warming that "one human in a developed country is not equivalent to one person in a developing country." What does this statement mean?

Accepted Answer

Each individual in a developed country p

Question 15

If you were a researcher trying to design a pesticide that would not accumulate by biological magnification, what two properties should the pesticide have?

Accepted Answer

It should break down

Question 16

Carbon dioxide is the only greenhouse gas. True or False?

Accepted Answer

A) True 
 B)False

Question 17

A carnivorous plant, such as a sundew, may be considered both a ________ when it eats a predaceous spider.

Accepted Answer

A) tertiary consumer and a producer 
B) secondary consumer and a producer 
C) primary consumer and a producer 
D) primary consumer and a secondary consumer 
E) primary consumer and a tertiary consumer 
A) tertiary consumer and a producer 
B) secondary consumer and a producer 
C) primary consumer and a producer 
D) primary consumer and a secondary consumer 
E) primary consumer and a tertiary consumer

Question 18

Organisms that produce their own food from inorganic compounds through reactions powered by sunlight are heterotrophs. True or False?

Accepted Answer

A) True 
 B)False

Question 19

Horses and cows are primary consumers. True or False?

Accepted Answer

A) True 
 B)False

Question 20

A major ecological concern, the greenhouse effect, is caused by:

Accepted Answer

A) the release of heat energy from burning fossil fuels. 
B) the release of carbon dioxide from the burning of wood, coal, and oil. 
C) the destruction of ozone in the upper atmosphere. 
D) overuse of fertilizers in farming. 
E) global warming. 
A) the release of heat energy from burning fossil fuels. 
B) the release of carbon dioxide from the burning of wood, coal, and oil. 
C) the destruction of ozone in the upper atmosphere. 
D) overuse of fertilizers in farming. 
E) global warming.

Exam 28: How Do Ecosystems Work

If a bird eats an insect that ate a plant, the bird is considered a(n):

Ornithologists have noted that Mexican Jays in Arizona are nesting 10 days earlier in the springtime today than they did in the 1970s. They suggest that this behavior is evidence of ________.

________ are organisms like earthworms and other scavengers that eat waste products and dead organic matter.

Forests along rivers in the Pacific Northwest that have lost their salmon populations are less productive because:

What would happen if there were no denitrifying bacteria?

If the plants in a community produce 500 grams of organic matter per square meter per year that is available for animals in the community to eat, this amount of energy is known as the:

Iron is a limiting factor in many aquatic ecosystems. If the iron level is increased, the amount of phytoplankton decreases. True or False?

Autotrophs use solar energy to build their own complex organic molecules from inorganic compounds such as water and carbon dioxide. True or False?

Nitrogen is fixed by soil bacteria and is then incorporated into plant biomass and eventually into the food chain. What process(es)complete the global nitrogen cycle?

The global hydrologic cycle begins with precipitation falling to Earth, and the cycle is completed by ________.

In the ________ cycle, water is cycled among the atmosphere, oceans, and living organisms.

Herbivores occupy the trophic level of ________.

Detritus feeders consume:

It has been said about global warming that "one human in a developed country is not equivalent to one person in a developing country." What does this statement mean?

If you were a researcher trying to design a pesticide that would not accumulate by biological magnification, what two properties should the pesticide have?

Carbon dioxide is the only greenhouse gas. True or False?

A carnivorous plant, such as a sundew, may be considered both a ________ when it eats a predaceous spider.

Organisms that produce their own food from inorganic compounds through reactions powered by sunlight are heterotrophs. True or False?

Horses and cows are primary consumers. True or False?

A major ecological concern, the greenhouse effect, is caused by:

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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