Question 1

What benefit do legumes derive from Rhizobium ? ​

Accepted Answer

A) help make carbon dioxide more available 
B) increase root surface area 
C) nitrogen fixation 
D) protection from predators 
E) retain water so it is more available to the plant 
A) help make carbon dioxide more available 
B) increase root surface area 
C) nitrogen fixation 
D) protection from predators 
E) retain water so it is more available to the plant

Question 2

In the experiment involving bluegill sunfish and their choice of diet, when equal numbers of small, medium, and large Daphnia are present, the sunfish ____. ​

Accepted Answer

A) prefer small Daphnia 
B) prefer medium Daphnia 
C) prefer large Daphnia 
D) show no preference 
E) will not consume Daphnia 
A) prefer small Daphnia 
B) prefer medium Daphnia 
C) prefer large Daphnia 
D) show no preference 
E) will not consume Daphnia

Question 3

Realized niches are larger than fundamental niches.

Accepted Answer

A) True 
 B)False

Question 4

A crow that consumes plants, insects and carrion is a ____. ​

Accepted Answer

A) generalist and an omnivore 
B) generalist and a herbivore 
C) specialist and a carnivore 
D) specialist and a generalist 
E) specialist and a herbivore 
A) generalist and an omnivore 
B) generalist and a herbivore 
C) specialist and a carnivore 
D) specialist and a generalist 
E) specialist and a herbivore

Question 5

A foundation species ____. ​

Accepted Answer

A) provides a foundation for parasites 
B) has mutualistic relationships with many species 
C) defines the nature of a community 
D) lives in many different habitats 
E) provides protection for species in its community 
A) provides a foundation for parasites 
B) has mutualistic relationships with many species 
C) defines the nature of a community 
D) lives in many different habitats 
E) provides protection for species in its community

Question 6

Which conclusion can be drawn from Gause's experiments on interspecific competition between two species of Paramecium that are cultured together and feed on the same resource? ​

Accepted Answer

A) Both populations of Paramecium expire due to a build-up of waste products. 
B) One population of Paramecium used the other as a food source. 
C) Paramecium populations survive well together because they have no limiting resources. 
D) When two populations of Paramecium use the same limiting resource, they can coexist long term. 
E) When two populations of Paramecium use the same limiting resource, they cannot coexist long term. 
A) Both populations of Paramecium expire due to a build-up of waste products. 
B) One population of Paramecium used the other as a food source. 
C) Paramecium populations survive well together because they have no limiting resources. 
D) When two populations of Paramecium use the same limiting resource, they can coexist long term. 
E) When two populations of Paramecium use the same limiting resource, they cannot coexist long term.

Question 7

Discuss two hypotheses that attempt to explain the high species richness in the tropics. ​

Accepted Answer

An ecological hypothesis is based on the

Question 8

Match between columns
                        Premises: both populations in the relationship benefit

Accepted Answer

The Answer of commensalism and parasitism and mutualism and herbivory is...

Question 9

Match between columns
                        Premises: two populations lose access to some resources

Accepted Answer

The Answer of predation and commensalism and mutualism and parasitism is...

Question 10

Two snakes that have similar bright color patterns are exhibit aposematic coloration . ​

Accepted Answer

A) True 
 B)False

Question 11

Who believed that once a mature community was established, its species composition was at equilibrium? ​

Accepted Answer

A) Clements 
B) Gleason 
C) Darwin 
D) Whittaker 
E) Connell 
A) Clements 
B) Gleason 
C) Darwin 
D) Whittaker 
E) Connell

Question 12

During the 1960s and 1970s, ecologists emphasized competition as the primary factor structuring communities.

Accepted Answer

A) True 
 B)False

Question 13

Leopard seals feed on emperor penguins, which feed on secondary consumers. Which trophic level would the leopard seal occupy in this food web? ​

Accepted Answer

A) decomposer 
B) detritivore 
C) primary consumer 
D) primary producer 
E) quaternary consumer 
A) decomposer 
B) detritivore 
C) primary consumer 
D) primary producer 
E) quaternary consumer

Question 14

When populations of antelopes and cheetahs coexist, which population changes are likely to occur due to natural selection?

Accepted Answer

First, the antelope population may decli

Question 15

What is the effect of stress on a population? ​

Accepted Answer

A) Plants compete less with each other in stressful environments. 
B) Plants compete more with each other in a stressful environments. 
C) Only abiotic factors contribute to environmental stress. 
D) Stressful environments brought about by humans do not affect populations. 
E) Stressful environments brought about by nature do not affect populations. 
A) Plants compete less with each other in stressful environments. 
B) Plants compete more with each other in a stressful environments. 
C) Only abiotic factors contribute to environmental stress. 
D) Stressful environments brought about by humans do not affect populations. 
E) Stressful environments brought about by nature do not affect populations.

Question 16

In 1935, the cane toad was introduced to Australia to control insect pests. Its population has since grown to 2 million, mostly due to ____. ​

Accepted Answer

A) herbivory of sugar cane 
B) the absence of competing species or natural predators 
C) its mutually beneficial relationship with some native species 
D) parasitism of sugar cane 
E) it only occupies a small niche environment 
A) herbivory of sugar cane 
B) the absence of competing species or natural predators 
C) its mutually beneficial relationship with some native species 
D) parasitism of sugar cane 
E) it only occupies a small niche environment

Question 17

Which trophic level would be best represented by saprophytic fungi? ​

Accepted Answer

A) decomposer 
B) detritivore 
C) primary consumer 
D) primary producer 
E) secondary consumer 
A) decomposer 
B) detritivore 
C) primary consumer 
D) primary producer 
E) secondary consumer

Question 18

Interference competition and exploitative competition are both examples of ____. ​

Accepted Answer

A) coevolution 
B) mimicry 
C) interspecific competition 
D) intraspecific competition 
E) parasitism 
A) coevolution 
B) mimicry 
C) interspecific competition 
D) intraspecific competition 
E) parasitism

Question 19

How do pancake tortoises protect themselves from predators? ​

Accepted Answer

A) Their coloration serves as a disguise. 
B) They emit an undesirable scent. 
C) They have large jaws with teeth. 
D) They puff themselves up and become wedged in between cracks in rocks. 
E) They retreat into their shell. 
A) Their coloration serves as a disguise. 
B) They emit an undesirable scent. 
C) They have large jaws with teeth. 
D) They puff themselves up and become wedged in between cracks in rocks. 
E) They retreat into their shell.

Question 20

Why do early successional stages harbor many r -selected species? ​

Accepted Answer

A) they often require shade 
B) they are long-lived 
C) they are not damaged by disturbances 
D) they produce many small seeds that colonize open areas 
E) they grow slowly 
A) they often require shade 
B) they are long-lived 
C) they are not damaged by disturbances 
D) they produce many small seeds that colonize open areas 
E) they grow slowly

Exam 53: Population Interactions and Community Ecology

What benefit do legumes derive from Rhizobium ? ​

In the experiment involving bluegill sunfish and their choice of diet, when equal numbers of small, medium, and large Daphnia are present, the sunfish ____. ​

Realized niches are larger than fundamental niches.

A crow that consumes plants, insects and carrion is a ____. ​

A foundation species ____. ​

Which conclusion can be drawn from Gause's experiments on interspecific competition between two species of Paramecium that are cultured together and feed on the same resource? ​

Discuss two hypotheses that attempt to explain the high species richness in the tropics. ​

Two snakes that have similar bright color patterns are exhibit aposematic coloration . ​

Who believed that once a mature community was established, its species composition was at equilibrium? ​

During the 1960s and 1970s, ecologists emphasized competition as the primary factor structuring communities.

Leopard seals feed on emperor penguins, which feed on secondary consumers. Which trophic level would the leopard seal occupy in this food web? ​

When populations of antelopes and cheetahs coexist, which population changes are likely to occur due to natural selection?

What is the effect of stress on a population? ​

In 1935, the cane toad was introduced to Australia to control insect pests. Its population has since grown to 2 million, mostly due to ____. ​

Which trophic level would be best represented by saprophytic fungi? ​

Interference competition and exploitative competition are both examples of ____. ​

How do pancake tortoises protect themselves from predators? ​

Why do early successional stages harbor many r -selected species? ​

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

What benefit do legumes derive from Rhizobium ?

In the experiment involving bluegill sunfish and their choice of diet, when equal numbers of small, medium, and large Daphnia are present, the sunfish ____.

A crow that consumes plants, insects and carrion is a ____.

A foundation species ____.

Which conclusion can be drawn from Gause's experiments on interspecific competition between two species of Paramecium that are cultured together and feed on the same resource?

Discuss two hypotheses that attempt to explain the high species richness in the tropics.

Two snakes that have similar bright color patterns are exhibit aposematic coloration .

Who believed that once a mature community was established, its species composition was at equilibrium?

Leopard seals feed on emperor penguins, which feed on secondary consumers. Which trophic level would the leopard seal occupy in this food web?

What is the effect of stress on a population?

In 1935, the cane toad was introduced to Australia to control insect pests. Its population has since grown to 2 million, mostly due to ____.

Which trophic level would be best represented by saprophytic fungi?

Interference competition and exploitative competition are both examples of ____.

How do pancake tortoises protect themselves from predators?

Why do early successional stages harbor many r -selected species?