Question 1

If a species of fruit fly needs a minimum amount of leaf surface area for mating,once there are enough fruit flies to occupy all mating spaces,the population is at carrying capacity.

Accepted Answer

A) True 
 B)False

Question 2

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?

Accepted Answer

A)   The guppies are an equilibrium species.
B)   The guppies are an opportunistic species.
C)   Density-independent factors affect the guppy populations.
D)   Density-dependent factors affect the guppy populations.
E)   Sexual selection affects the guppy populations.F) A) and D)
G) A) and B)

Question 3

Which best describes the link between survivorship curves and opportunistic species?

Accepted Answer

A)   Opportunistic species are limited by density-dependent factors and have few offspring.
B)   Opportunistic species are limited by density-independent factors and have few offspring.
C)   Opportunistic species are limited by density-independent factors and have many offspring.
D)   Opportunistic species are limited by density-dependent factors and have many offspring.
E)   No answer is correct.F) All of the above
G) B) and C)

Question 4

An example of a density-independent factor that affects a population's growth is

Accepted Answer

A)   insects eating your tomato plants.
B)   your tomato plants competing for water.
C)   a fungus infecting your tomato plants.
D)   frost killing all of your tomato plants.
E)   All answers are correct.F) A) and C)
G) C) and E)

Question 5

In a survivorship curve,a type II species,like a song bird,is a species that has

Accepted Answer

A)   an equal probability of dying at any age.
B)   a strong possibility of becoming extinct in a relatively short period of time.
C)   the highest probability of dying as it reaches its maximum life span.
D)   an extremely short life span.
E)   the highest probability of dying at a very young age.F) None of the above
G) C) and E)

Question 6

A density-independent factor is one that affects population without regard to the number of individuals per area.

Accepted Answer

A) True 
 B)False

Question 7

In regards to a species' life history,equilibrium species

Accepted Answer

A)   have only a few offspring.
B)   are short-lived.
C)   reproduce at an early age.
D)   have a large number of offspring.
E)   give very little care to their offspring.F) A) and B)
G) None of the above

Question 8

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.F) A) and C)
G) C) and D)

Question 9

If there are 10 tortoises on a 2 hectare island,the population density is 5 tortoises per hectare.

Accepted Answer

A) True 
 B)False

Question 10

Ecologists study

Accepted Answer

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

Exam 18: Populations

If a species of fruit fly needs a minimum amount of leaf surface area for mating,once there are enough fruit flies to occupy all mating spaces,the population is at carrying capacity.

Correct Answer
verified

In a survivorship curve,a type II species,like a song bird,is a species that has

Correct Answer
verified

In regards to a species' life history,equilibrium species

Correct Answer
verified

A density-independent factor is one that affects population without regard to the number of individuals per area.

Correct Answer
verified

Ecologists study

Correct Answer
verified

Which best describes the link between survivorship curves and opportunistic species?

Correct Answer
verified

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?

Correct Answer
verified

An example of a density-independent factor that affects a population's growth is

Correct Answer
verified

If there are 10 tortoises on a 2 hectare island,the population density is 5 tortoises per hectare.

Correct Answer
verified

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

Correct Answer
verified

Exam 18: Populations

If a species of fruit fly needs a minimum amount of leaf surface area for mating,once there are enough fruit flies to occupy all mating spaces,the population is at carrying capacity.

Correct AnswerverifiedShow Answer

In a survivorship curve,a type II species,like a song bird,is a species that has

Correct AnswerverifiedShow Answer

In regards to a species' life history,equilibrium species

Correct AnswerverifiedShow Answer

A density-independent factor is one that affects population without regard to the number of individuals per area.

Correct AnswerverifiedShow Answer

Ecologists study

Correct AnswerverifiedShow Answer

Which best describes the link between survivorship curves and opportunistic species?

Correct AnswerverifiedShow Answer

Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?

Correct AnswerverifiedShow Answer

An example of a density-independent factor that affects a population's growth is

Correct AnswerverifiedShow Answer

If there are 10 tortoises on a 2 hectare island,the population density is 5 tortoises per hectare.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified