Question 1

In the section "Investigating Life: Let Your Love Light Shine",what did the scientists propose to explain why females did not prefer males with longer duration flashes?

Accepted Answer

A) The males produced spermatophores too large in size. 
B) They were similar to those from predatory fireflies. 
C) The males produced spermatophores too small in size. 
D) They may be from a different species of firefly. 
A) The males produced spermatophores too large in size. 
B) They were similar to those from predatory fireflies. 
C) The males produced spermatophores too small in size. 
D) They may be from a different species of firefly. B

Question 2

Hydra,a type of cnidarian,have equal survival rates through life because they are equally fit at all stages.Hydra are an example of an organism with a type ______ survivorship curve.

Accepted Answer

A) 0 
B) I 
C) II 
D) III 
E) IV 
A) 0 
B) I 
C) II 
D) III 
E) IV C

Question 3

The maximum number of individuals of a population that a habitat can support indefinitely is its carrying capacity.

Accepted Answer

A) True 
 B)False  True

Question 4

The number of new individuals produced per unit time in a population is its

Accepted Answer

A) immigration rate. 
B) emigration rate. 
C) death rate. 
D) birth rate. 
E) expatriation ratE. 
A) immigration rate. 
B) emigration rate. 
C) death rate. 
D) birth rate. 
E) expatriation ratE.

Question 5

Which of the following organisms is an example of an equilibrium species?

Accepted Answer

A) cats 
B) rats 
C) spiders 
D) whales 
E) goldfish 
A) cats 
B) rats 
C) spiders 
D) whales 
E) goldfish

Question 6

In the section "Investigating Life: Let Your Love Light Shine",what correlation did the scientists observe in part a of the figure?

Accepted Answer

A) The longer the flash duration,the larger the size of the spermatophore. 
B) The shorter the flash duration,the larger the size of the spermatophore. 
C) The longer the flash duration,the smaller the size of the spermatophore. 
D) There was no correlation between the flash duration and the size of the spermatophore. 
A) The longer the flash duration,the larger the size of the spermatophore. 
B) The shorter the flash duration,the larger the size of the spermatophore. 
C) The longer the flash duration,the smaller the size of the spermatophore. 
D) There was no correlation between the flash duration and the size of the spermatophore.

Question 7

Which of the following is an example of an aquatic ecosystem?

Accepted Answer

A) fishes,snails,crabs,water,and salinity 
B) fishes,snails,and crabs only 
C) both water and salinity 
D) water only 
E) salinity only 
A) fishes,snails,crabs,water,and salinity 
B) fishes,snails,and crabs only 
C) both water and salinity 
D) water only 
E) salinity only

Question 8

In a survivorship curve,a type I species,like a human or elephant,is a species that

Accepted Answer

A) has an equal probability of dying at any age. 
B) has the highest probability of dying as it reaches its maximum life span. 
C) has a strong possibility of becoming extinct in a relatively short period of time. 
D) has an extremely short life span. 
E) has the highest probability of dying at a very young agE. 
A) has an equal probability of dying at any age. 
B) has the highest probability of dying as it reaches its maximum life span. 
C) has a strong possibility of becoming extinct in a relatively short period of time. 
D) has an extremely short life span. 
E) has the highest probability of dying at a very young agE.

Question 9

A group of organisms of one species occupying a geographical location at the same time is a

Accepted Answer

A) population. 
B) community. 
C) peer group. 
D) flock. 
E) herd. 
A) population. 
B) community. 
C) peer group. 
D) flock. 
E) herd.

Question 10

A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual.Why are some ecologists concerned about the ecological footprint of a country like India?

Accepted Answer

A) Its population is increasing. 
B) Its standard of living is increasing. 
C) Both its population and standard of living are increasing. 
D) Its population and land area are increasing. 
E) Its standard of living and land area are increasing. 
A) Its population is increasing. 
B) Its standard of living is increasing. 
C) Both its population and standard of living are increasing. 
D) Its population and land area are increasing. 
E) Its standard of living and land area are increasing.

Question 11

The number of individuals that die in a population per unit time is its

Accepted Answer

A) immigration rate. 
B) emigration rate. 
C) death rate. 
D) birth rate. 
E) expatriation ratE. 
A) immigration rate. 
B) emigration rate. 
C) death rate. 
D) birth rate. 
E) expatriation ratE.

Question 12

Why are the leading causes of human death in high-income countries heart disease,stroke,and cancer,while in low-income countries infectious diseases are the leading causes of death?

Accepted Answer

A) High-income countries have sedentary life habits,excess food resources,and longer life expectancies. 
B) High-income countries have larger ecological footprints. 
C) High-income countries have larger population densities only. 
D) High-income countries have larger population densities and are usually clustereD. 
E) Genetic differences between populations causes the differences. 
A) High-income countries have sedentary life habits,excess food resources,and longer life expectancies. 
B) High-income countries have larger ecological footprints. 
C) High-income countries have larger population densities only. 
D) High-income countries have larger population densities and are usually clustereD. 
E) Genetic differences between populations causes the differences.

Question 13

Which of the following are abiotic components?

Accepted Answer

A) trees,birds,insects,rainfall,and sunlight 
B) trees,birds,and insects only 
C) birds and insects only 
D) trees only 
E) rainfall and sunlight only 
A) trees,birds,insects,rainfall,and sunlight 
B) trees,birds,and insects only 
C) birds and insects only 
D) trees only 
E) rainfall and sunlight only

Question 14

Which of the following is an example of an aquatic community?

Accepted Answer

A) fishes,snails,crabs,water,and salinity 
B) fishes,snails,and crabs only 
C) both water and salinity 
D) water only 
E) salinity only 
A) fishes,snails,crabs,water,and salinity 
B) fishes,snails,and crabs only 
C) both water and salinity 
D) water only 
E) salinity only

Question 15

Ecologists study

Accepted Answer

A) prokaryotes only. 
B) eukaryotes only. 
C) interactions between all organisms. 
D) plants and animals only. 
E) animals only. 
A) prokaryotes only. 
B) eukaryotes only. 
C) interactions between all organisms. 
D) plants and animals only. 
E) animals only.

Question 16

Which of the following organisms is an example of an opportunistic species?

Accepted Answer

A) dolphins 
B) humans 
C) rabbits 
D) penguins 
E) tortoises 
A) dolphins 
B) humans 
C) rabbits 
D) penguins 
E) tortoises

Question 17

Governments of France,Canada,and China offer financial incentives to encourage citizens to have children.

Accepted Answer

A) True 
 B)False

Question 18

In 2010,India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.What was the growth rate of India's population?

Accepted Answer

A) 0.027 
B) 0.013 
C) 0.014 
D) 0.040 
E) 0.001 
A) 0.027 
B) 0.013 
C) 0.014 
D) 0.040 
E) 0.001

Question 19

Which of the following best describes the link between survivorship curves and equilibrium species?

Accepted Answer

A) Equilibrium species are limited by density-independent factors and have few offspring. 
B) Equilibrium species are limited by density-dependent factors and have many offspring. 
C) Equilibrium species are limited by density-dependent factors and have few offspring. 
D) Equilibrium species are limited by density-independent factors and have many offspring. 
A) Equilibrium species are limited by density-independent factors and have few offspring. 
B) Equilibrium species are limited by density-dependent factors and have many offspring. 
C) Equilibrium species are limited by density-dependent factors and have few offspring. 
D) Equilibrium species are limited by density-independent factors and have many offspring.

Question 20

When exponential growth is plotted over time an S-shaped curve emerges.

Accepted Answer

A) True 
 B)False

Exam 18: Population Ecology

In the section "Investigating Life: Let Your Love Light Shine",what did the scientists propose to explain why females did not prefer males with longer duration flashes?

Hydra,a type of cnidarian,have equal survival rates through life because they are equally fit at all stages.Hydra are an example of an organism with a type ______ survivorship curve.

The maximum number of individuals of a population that a habitat can support indefinitely is its carrying capacity.

The number of new individuals produced per unit time in a population is its

Which of the following organisms is an example of an equilibrium species?

In the section "Investigating Life: Let Your Love Light Shine",what correlation did the scientists observe in part a of the figure?

Which of the following is an example of an aquatic ecosystem?

In a survivorship curve,a type I species,like a human or elephant,is a species that

A group of organisms of one species occupying a geographical location at the same time is a

A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual.Why are some ecologists concerned about the ecological footprint of a country like India?

The number of individuals that die in a population per unit time is its

Why are the leading causes of human death in high-income countries heart disease,stroke,and cancer,while in low-income countries infectious diseases are the leading causes of death?

Which of the following are abiotic components?

Which of the following is an example of an aquatic community?

Ecologists study

Which of the following organisms is an example of an opportunistic species?

Governments of France,Canada,and China offer financial incentives to encourage citizens to have children.

In 2010,India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.What was the growth rate of India's population?

Which of the following best describes the link between survivorship curves and equilibrium species?

When exponential growth is plotted over time an S-shaped curve emerges.

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

Communities and Ecosystems

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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