Question 1

When two or more species vie for the same limited resource,______ occurs.

Accepted Answer

A) succession 
B) symbiosis 
C) coevolution 
D) stotting 
E) competition 
A) succession 
B) symbiosis 
C) coevolution 
D) stotting 
E) competition E

Question 2

Parasitism is a symbiotic relationship in which neither member of the relationship benefits.

Accepted Answer

A) True 
 B)False  False

Question 3

Why are estuaries and coral reefs more productive than deeper regions of the ocean?

Accepted Answer

A) They have more access to light and nutrients. 
B) They have more access to light and lower salt concentrations in the water. 
C) They have more access to light. 
D) They have more access to nutrients and lower salt concentrations in the water. 
E) They have lower salt concentrations in the water. 
A) They have more access to light and nutrients. 
B) They have more access to light and lower salt concentrations in the water. 
C) They have more access to light. 
D) They have more access to nutrients and lower salt concentrations in the water. 
E) They have lower salt concentrations in the water. A

Question 4

The highest elevation at which trees can grow is

Accepted Answer

A) the Arctic tree line. 
B) usually determined by salt spray. 
C) determined by temperature. 
D) the Antarctic tree line. 
E) usually determined by oxygen concentration in the atmospherE. 
A) the Arctic tree line. 
B) usually determined by salt spray. 
C) determined by temperature. 
D) the Antarctic tree line. 
E) usually determined by oxygen concentration in the atmospherE.

Question 5

Which of the following is NOT considered a coniferous tree?

Accepted Answer

A) spruce 
B) pine 
C) maple 
D) fir 
E) hemlock 
A) spruce 
B) pine 
C) maple 
D) fir 
E) hemlock

Question 6

Which of the following is NOT a component of a tropical marine ecosystem?

Accepted Answer

A) All of the answers are components of a tropical marine ecosystem. 
B) sunlight 
C) algae 
D) corals 
E) fishes 
A) All of the answers are components of a tropical marine ecosystem. 
B) sunlight 
C) algae 
D) corals 
E) fishes

Question 7

Which of the following are biotic interactions in an ecosystem?

Accepted Answer

A) competition and competitive exclusion 
B) mutualism and parasitism 
C) herbivory and predation 
D) None of the answers are biotic interactions. 
E) All of the answers are biotic interactions. 
A) competition and competitive exclusion 
B) mutualism and parasitism 
C) herbivory and predation 
D) None of the answers are biotic interactions. 
E) All of the answers are biotic interactions.

Question 8

An organism's ______ is its position in the food chain relative to the ecosystem's energy source.

Accepted Answer

A) habitat 
B) niche 
C) climax level 
D) trophic level 
E) keystone level 
A) habitat 
B) niche 
C) climax level 
D) trophic level 
E) keystone level

Question 9

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what is the dependent variable in the figure?

Accepted Answer

A) number of plants that could grow at 37$\circ$C 
B) number of plants that could grow at 65$\circ$C 
C) number of plants that died at 65$\circ$C 
D) number of plants that died at 37$\circ$C 
A) number of plants that could grow at 37$\circ$C 
B) number of plants that could grow at 65$\circ$C 
C) number of plants that died at 65$\circ$C 
D) number of plants that died at 37$\circ$C

Question 10

What features of a desert ecosystem control the communities which can survive in a desert?

Accepted Answer

A) amount of light 
B) temperature 
C) amount of water 
D) All answers are correct. 
E) amount of usable habitat 
A) amount of light 
B) temperature 
C) amount of water 
D) All answers are correct. 
E) amount of usable habitat

Question 11

The adaptations in Pseudomyrmex species and acacias suggest that the two species

Accepted Answer

A) have coevolved. 
B) have intermingled. 
C) have evolved separately. 
D) occupy the same niche. 
E) occupy the same tidal zonE. 
A) have coevolved. 
B) have intermingled. 
C) have evolved separately. 
D) occupy the same niche. 
E) occupy the same tidal zonE.

Question 12

Which of the following is NOT a major component of soil?

Accepted Answer

A) rock fragments 
B) organic matter 
C) microbes 
D) bacteria 
E) chloroplasts 
A) rock fragments 
B) organic matter 
C) microbes 
D) bacteria 
E) chloroplasts

Question 13

The area where the fresh water of a river meets the salt water of the ocean is a(n)

Accepted Answer

A) intertidal zone. 
B) continental shelf. 
C) hydrothermal vent. 
D) open ocean. 
E) estuary. 
A) intertidal zone. 
B) continental shelf. 
C) hydrothermal vent. 
D) open ocean. 
E) estuary.

Question 14

Mycorrhizal fungi obtain food from plants in exchange for water and nutrients.This is an example of

Accepted Answer

A) commensalism. 
B) parasitism. 
C) mutualism. 
D) predation. 
E) herbivory. 
A) commensalism. 
B) parasitism. 
C) mutualism. 
D) predation. 
E) herbivory.

Question 15

An example of a keystone species is a root-associated fungus that conifer trees need in order to survive and that supplies food for rodents.

Accepted Answer

A) True 
 B)False

Question 16

If global temperatures increase,which biome will the Boundary Waters Canoe Area (BWCA)turn into?

Accepted Answer

A) tropical rainforest 
B) deciduous forest 
C) boreal forest 
D) short grass prairie 
E) tundra 
A) tropical rainforest 
B) deciduous forest 
C) boreal forest 
D) short grass prairie 
E) tundra

Question 17

A genetic change in one species that selects for a subsequent change in a different species is termed

Accepted Answer

A) coevolution. 
B) genetic dispersion. 
C) gene dynamics. 
D) competitive exclusion. 
E) evolutionary dynamics. 
A) coevolution. 
B) genetic dispersion. 
C) gene dynamics. 
D) competitive exclusion. 
E) evolutionary dynamics.

Question 18

Scientists reported that hurricane intensity has increased over the past 35 years,coinciding with increasing sea temperature.At the equator,the Earth receives the

Accepted Answer

A) maximum amount of solar radiation per unit areA. 
B) minimum amount of solar radiation per unit area. 
C) maximum amount of solar radiation only over the ocean. 
D) maximum amount of solar radiation only over the land mass. 
A) maximum amount of solar radiation per unit areA. 
B) minimum amount of solar radiation per unit area. 
C) maximum amount of solar radiation only over the ocean. 
D) maximum amount of solar radiation only over the land mass.

Question 19

Along coastlines,the area between high tide and low tide is the

Accepted Answer

A) open ocean. 
B) hydrothermal vent. 
C) intertidal zone. 
D) estuary. 
E) continental shelf. 
A) open ocean. 
B) hydrothermal vent. 
C) intertidal zone. 
D) estuary. 
E) continental shelf.

Question 20

Most of Earth's fresh water is found in lakes,ponds,and streams.

Accepted Answer

A) True 
 B)False

Exam 19: Communities and Ecosystems

When two or more species vie for the same limited resource,______ occurs.

Parasitism is a symbiotic relationship in which neither member of the relationship benefits.

Why are estuaries and coral reefs more productive than deeper regions of the ocean?

The highest elevation at which trees can grow is

Which of the following is NOT considered a coniferous tree?

Which of the following is NOT a component of a tropical marine ecosystem?

Which of the following are biotic interactions in an ecosystem?

An organism's ______ is its position in the food chain relative to the ecosystem's energy source.

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what is the dependent variable in the figure?

What features of a desert ecosystem control the communities which can survive in a desert?

The adaptations in Pseudomyrmex species and acacias suggest that the two species

Which of the following is NOT a major component of soil?

The area where the fresh water of a river meets the salt water of the ocean is a(n)

Mycorrhizal fungi obtain food from plants in exchange for water and nutrients.This is an example of

An example of a keystone species is a root-associated fungus that conifer trees need in order to survive and that supplies food for rodents.

If global temperatures increase,which biome will the Boundary Waters Canoe Area (BWCA)turn into?

A genetic change in one species that selects for a subsequent change in a different species is termed

Scientists reported that hurricane intensity has increased over the past 35 years,coinciding with increasing sea temperature.At the equator,the Earth receives the

Along coastlines,the area between high tide and low tide is the

Most of Earth's fresh water is found in lakes,ponds,and streams.

Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

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