Question 1

Which of the following apply to the demography of human populations today? (Check all that apply.)

Accepted Answer

A) Our ecological footprint is decreasing. 
B) We are using distributed resources disproportionately-less than 20% of us use over 80% of the energy. 
C) We have plenty of resources still untouched. 
D) We use almost half of the Earth's land. 
E) We use over half of all renewable fresh water sources. 
A) Our ecological footprint is decreasing. 
B) We are using distributed resources disproportionately-less than 20% of us use over 80% of the energy. 
C) We have plenty of resources still untouched. 
D) We use almost half of the Earth's land. 
E) We use over half of all renewable fresh water sources.

Question 2

What are population pyramids used to show?

Accepted Answer

A) death rates 
B) birth rates 
C) competition 
D) age composition of a population 
E) the carrying capacity 
A) death rates 
B) birth rates 
C) competition 
D) age composition of a population 
E) the carrying capacity

Question 3

You work for a successful company that sells maternity clothes.They have asked you to evaluate whether Australia or Singapore would be a better country to expand into with new stores.What keyword will help you find the data you need to make this evaluation?

Accepted Answer

A) range expansion 
B) dispersal 
C) metapopulation 
D) demographics 
A) range expansion 
B) dispersal 
C) metapopulation 
D) demographics

Question 4

A species colonizes an island,goes through a phase of exponential growth,and reaches the carrying capacity of the island.At what stage is the growth rate slowest?

Accepted Answer

A) initial colonization 
B) exponential phase 
C) approaching K 
D) after reaching K 
A) initial colonization 
B) exponential phase 
C) approaching K 
D) after reaching K

Question 5

Which one of the following expressions from the logistic equation (dN/dt = rN ((K - N)/K)represents the proportion of unused resources remaining for use by the population?

Accepted Answer

A) the carrying capacity (K) 
B) the population size (N) 
C) the biotic potential (rN) 
D) (K - N)/K 
E) the growth rate (dN/dt) 
A) the carrying capacity (K) 
B) the population size (N) 
C) the biotic potential (rN) 
D) (K - N)/K 
E) the growth rate (dN/dt)

Question 6

Select the description of a population pyramid for a population that has the largest potential for exponential growth.

Accepted Answer

A) broad at the base,narrow at the top,with more females than males 
B) broad at the base,narrow at the top,with more males than females 
C) uniform at all age classes,with more females than males 
D) broad at the top,narrow at the base,with more males than females 
E) broad at the top,narrow at the base,with more females than males 
A) broad at the base,narrow at the top,with more females than males 
B) broad at the base,narrow at the top,with more males than females 
C) uniform at all age classes,with more females than males 
D) broad at the top,narrow at the base,with more males than females 
E) broad at the top,narrow at the base,with more females than males

Question 7

Which organism is most likely to have a type III survivorship curve?

Accepted Answer

A) an oak tree 
B) a domestic dog 
C) corn in a farmer's field 
D) Paramecium 
A) an oak tree 
B) a domestic dog 
C) corn in a farmer's field 
D) Paramecium

Question 8

The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of what?

Accepted Answer

A) adaptation 
B) selection 
C) reproduction 
D) genetic change 
E) fitness 
A) adaptation 
B) selection 
C) reproduction 
D) genetic change 
E) fitness

Question 9

The range of a population

Accepted Answer

A) is very fluid and changes frequently in a random fashion. 
B) is stable and almost never changes. 
C) only changes after a disaster has wiped out a former range. 
D) changes over time due to external events. 
E) only changes due to iteroparity. 
A) is very fluid and changes frequently in a random fashion. 
B) is stable and almost never changes. 
C) only changes after a disaster has wiped out a former range. 
D) changes over time due to external events. 
E) only changes due to iteroparity.

Exam 54: Ecology of Individuals and Populations

Which of the following apply to the demography of human populations today? (Check all that apply.)

What are population pyramids used to show?

You work for a successful company that sells maternity clothes.They have asked you to evaluate whether Australia or Singapore would be a better country to expand into with new stores.What keyword will help you find the data you need to make this evaluation?

A species colonizes an island,goes through a phase of exponential growth,and reaches the carrying capacity of the island.At what stage is the growth rate slowest?

Which one of the following expressions from the logistic equation (dN/dt = rN ((K - N)/K)represents the proportion of unused resources remaining for use by the population?

Select the description of a population pyramid for a population that has the largest potential for exponential growth.

Which organism is most likely to have a type III survivorship curve?

The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of what?

The range of a population

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