Question 1

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)  IVF) A) and C)
G) B) and C)

Question 2

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) B) and D)
G) B) and E)

Question 3

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)  0.001F) B) and E)
G) D) and E)

Question 4

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 5

If a species of guppy lives in a stream where there is more food than they need,they are at carrying capacity.

Accepted Answer

A) True 
 B)False

Question 6

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) B) and E)
G) A) and D)

Question 7

Which 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 onlyF) A) and E)
G) All of the above

Question 8

Based upon the age structure diagram,you expect the American population to2013_QC_42798

Accepted Answer

A)  grow because all of the age classes have roughly equal proportions of people.
B)  grow then shrink because many of the people will be entering the post-reproductive years.
C)  grow because a large proportion of the population will be entering the reproductive years.
D)  grow then decline because a lower proportion of individuals are in prereproductive age classes.
E)  No answer is correct.F) C) and D)
G) C) and E)

Exam 18: Populations

Which is an example of an aquatic ecosystem?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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.

Correct Answer
verified

If a species of guppy lives in a stream where there is more food than they need,they are at carrying capacity.

Correct Answer
verified

Based upon the age structure diagram,you expect the American population to2013_QC_42798

Correct Answer
verified

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?

Correct Answer
verified

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

Correct Answer
verified

Exam 18: Populations

Which is an example of an aquatic ecosystem?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

If a species of guppy lives in a stream where there is more food than they need,they are at carrying capacity.

Correct AnswerverifiedShow Answer

Based upon the age structure diagram,you expect the American population to2013_QC_42798

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

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