Question 1

Which of the following animals would be most likely to simultaneously participate in seed dispersal and a gut inhabitant mutualism?

Accepted Answer

A) wolves 
B) rattlesnakes 
C) scorpions 
D) deer 
A) wolves 
B) rattlesnakes 
C) scorpions 
D) deer

Question 2

The inhabitants of an aquarium can be considered a community.

Accepted Answer

A) True 
 B)False

Question 3

Food webs, like the one in the figure below, help biologists predict the impact to a community that changes in species abundance might produce.  
After studying the food web above, select a reasonable outcome following the complete disappearance of leopard seals.

Accepted Answer

A) Killer whales may decline because they eat leopard seals. 
B) Chilean seas bass may increase because one of their primary predators is gone. 
C) Baleen whales will increase as more krill becomes available. 
D) Sperm whales may decline as squid become less abundant. 
A) Killer whales may decline because they eat leopard seals. 
B) Chilean seas bass may increase because one of their primary predators is gone. 
C) Baleen whales will increase as more krill becomes available. 
D) Sperm whales may decline as squid become less abundant.

Question 4

The interactions among organisms that reside in the same community or ecosystem are unlikely to have much effect on the physical aspects of those systems.

Accepted Answer

A) True 
 B)False

Question 5

By definition, primary consumers feed on secondary consumers.

Accepted Answer

A) True 
 B)False

Question 6

Human-caused changes in ecological communities can be considered unique because

Accepted Answer

A) humans have control over the actions that might cause the changes. 
B) human-caused changes are always more severe than natural changes. 
C) human-caused changes almost always benefit the existing community. 
D) human-caused changes almost always modify the regional climate. 
A) humans have control over the actions that might cause the changes. 
B) human-caused changes are always more severe than natural changes. 
C) human-caused changes almost always benefit the existing community. 
D) human-caused changes almost always modify the regional climate.

Question 7

The only source of energy for life on Earth is the sun.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following experiments would help to identify a keystone species?

Accepted Answer

A) Introduce more of the suspected species into the area and observe the effects on other community members. 
B) Remove the suspected species from the area and observe the effects on other community members. 
C) Introduce an invasive species related to the suspected species into the area and observe the effects on the suspected species. 
D) Introduce additional individuals of the suspected species' food source into the area and observe the effects on community members. 
A) Introduce more of the suspected species into the area and observe the effects on other community members. 
B) Remove the suspected species from the area and observe the effects on other community members. 
C) Introduce an invasive species related to the suspected species into the area and observe the effects on the suspected species. 
D) Introduce additional individuals of the suspected species' food source into the area and observe the effects on community members.

Question 9

The relationship among plants growing in a woodland and living in high density with limited resources can best be described as

Accepted Answer

A) pollinator mutualistic. 
B) parasitic. 
C) symbiotic. 
D) competitive. 
A) pollinator mutualistic. 
B) parasitic. 
C) symbiotic. 
D) competitive.

Question 10

____________________ consumers feed on primary consumers as part or all of their diet.

Accepted Answer

The answer of ____________________ consumers feed on primary consumers as...

Question 11

Into which category would a human be assigned when eating chicken?

Accepted Answer

A) producers 
B) primary consumers 
C) secondary consumers 
D) tertiary consumers 
A) producers 
B) primary consumers 
C) secondary consumers 
D) tertiary consumers

Question 12

Every healthy human digestive system is home to countless microorganisms. In a normal digestive system, what type of relationship would you say this is?

Accepted Answer

A) parasitic 
B) mutualistic 
C) competitive 
D) pathological 
A) parasitic 
B) mutualistic 
C) competitive 
D) pathological

Question 13

The process by which communities recover from ____________________ is known as secondary succession.

Accepted Answer

The answer of The process by which communities recover from...

Question 14

A(n)____________________ is an association of populations of different species that live in the same area.

Accepted Answer

The answer of A(n)____________________ is an association of populations of...

Question 15

In seed-dispersal mutualism, plants produce _____ to entice consumers to disperse the plant's seeds.

Accepted Answer

A) attractive aromas 
B) fleshy fruits 
C) edible pollen 
D) nectar 
A) attractive aromas 
B) fleshy fruits 
C) edible pollen 
D) nectar

Question 16

Which of the following statements about human-caused disturbances to communities is true?

Accepted Answer

A) Human-caused disturbances are not important because they do not cause any long-term permanent changes. 
B) When a community recovers from a human-caused disturbance, it returns to its predisturbance condition. 
C) Some communities can recover from human-caused disturbances over a period of time. 
D) All communities are able to recover from human-caused disturbances. 
A) Human-caused disturbances are not important because they do not cause any long-term permanent changes. 
B) When a community recovers from a human-caused disturbance, it returns to its predisturbance condition. 
C) Some communities can recover from human-caused disturbances over a period of time. 
D) All communities are able to recover from human-caused disturbances.

Question 17

Black oak trees are one of the earliest colonists after bare sand dunes are created.

Accepted Answer

A) True 
 B)False

Question 18

The sea star Pisaster ochraceus was removed from selected intertidal communities along the Washington coast. After 10 years how did those communities compare to control communities?

Accepted Answer

A) The communities were statistically indistinguishable from one another. 
B) Without sea stars, mussels became abundant and crowded out other community members. 
C) Other predatory sea stars replaced Pisaster. 
D) The mussel populations declined, but most species were unaffected. 
A) The communities were statistically indistinguishable from one another. 
B) Without sea stars, mussels became abundant and crowded out other community members. 
C) Other predatory sea stars replaced Pisaster. 
D) The mussel populations declined, but most species were unaffected.

Question 19

When two similar species inhabit the same area, they may evolve over time to become more different and

Accepted Answer

A) drive the other species to extinction. 
B) reduce direct competition. 
C) use up the other species' resources. 
D) reduce their genetic variation. 
A) drive the other species to extinction. 
B) reduce direct competition. 
C) use up the other species' resources. 
D) reduce their genetic variation.

Question 20

Bees can actually be harmed by use as pollinators for single crops.

Accepted Answer

A) True 
 B)False

Exam 23: Ecological Communities

Which of the following animals would be most likely to simultaneously participate in seed dispersal and a gut inhabitant mutualism?

The inhabitants of an aquarium can be considered a community.

Food webs, like the one in the figure below, help biologists predict the impact to a community that changes in species abundance might produce. After studying the food web above, select a reasonable outcome following the complete disappearance of leopard seals.

The interactions among organisms that reside in the same community or ecosystem are unlikely to have much effect on the physical aspects of those systems.

By definition, primary consumers feed on secondary consumers.

Human-caused changes in ecological communities can be considered unique because

The only source of energy for life on Earth is the sun.

Which of the following experiments would help to identify a keystone species?

The relationship among plants growing in a woodland and living in high density with limited resources can best be described as

____________________ consumers feed on primary consumers as part or all of their diet.

Into which category would a human be assigned when eating chicken?

Every healthy human digestive system is home to countless microorganisms. In a normal digestive system, what type of relationship would you say this is?

The process by which communities recover from ____________________ is known as secondary succession.

A(n)____________________ is an association of populations of different species that live in the same area.

In seed-dispersal mutualism, plants produce _____ to entice consumers to disperse the plant's seeds.

Which of the following statements about human-caused disturbances to communities is true?

Black oak trees are one of the earliest colonists after bare sand dunes are created.

The sea star Pisaster ochraceus was removed from selected intertidal communities along the Washington coast. After 10 years how did those communities compare to control communities?

When two similar species inhabit the same area, they may evolve over time to become more different and

Bees can actually be harmed by use as pollinators for single crops.

The Nature of Science and the Characteristics of Life

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Stem Cells, Cancer, and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

Dna and Genes

From Gene to Protein

Dna Technology

How Evolution Works

Evolution of Populations

Speciation and the Origins of Biological Diversity

The Evolutionary History of Life

The Biosphere

Growth of Populations

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons, Muscles, and Movement

Defenses Against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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