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Exam 30: Ecology and Populations

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Question 21

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What is the correct ratio of fossil fuel consumption between the MDCs and LDCs?

A) MDCs 60% vs.LDCs 40%
B) MDCs 40% vs.LDCs 60%
C) MDCs 22% vs.LDCs 78%
D) MDCs 50% vs.LDCs 50%
E) MDCs 80% vs.LDCs 20%

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

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Question 22

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Above is a life history table for a minnow (small fish) .Based on this table,what type of survivorship curve do these animals have?

A) Type I
B) Type II
C) Type III
D) Type IV
E) Type V

F) A) and B)
G) None of the above

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Question 23

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Above is a life history table for a minnow (small fish) .Based on this table,how many years until the population drops to less than 50% of its original population?

Prairie dogs are highly social,burrow dwelling rodents.Families have a strict social hierarchy and their "towns" can span hundreds of acres.In one colony,750 animals live in a 500m² area.What is the population density?

The growth rate continues to rise in some Asian countries.This is because

During a recent hurricane,25 individuals of the same butterfly species were blown onto a barrier island in southern Florida.Prior to this event,this species did not inhabit the island,but with the ample vegetation on the island and a lack of predators,the displaced individuals were able to survive and reproduce.After several years,the population stabilized with approximately 150 individuals.The 150 individuals on the island is an example of the

The birthrate in a small town is 14 per 1,000 per year and the death rate is 5 per 1,000 per year.What is the annual growth rate for this town?

During a recent hurricane,25 individuals of the same butterfly species were blown onto a barrier island in southern Florida.When the butterflies first arrived on the island,they remained in the southeast corner of the island where most of the flowering plants had not been destroyed or uprooted by the high winds and seas during the hurricane.What type of distribution do these butterflies exhibit?

Which of the following is an example of a density-independent factor?

During a summer with lots of rain,the vegetation grew lush and the white-footed mouse populations increased due to increases in food availability.However,the next two summers were record drought years and food became increasingly scarce.Over these two years,the population size of the mice decreased due to increased competition for access to food.This increased competition is an example of

Jacob is studying a population of wrens in Michigan.Over several years,he notices that the population always stabilizing at around 45 individuals.Forty-five individuals is

Which of the following is NOT characteristic of opportunistic populations?

This photo is an example of a(n)

If the fishing village of Hopkins Belize is experiencing a decreasing population.What should they do if they wish to reverse this trend and see the greatest amount of population growth in the next 10 years?

If a population of 200 squirrels has a 10 percent growth rate each year,how many individuals will there born in the next year?

Which of the following represents a Type III survivorship curve?

Organisms are more likely to face extinction if they have which of the following characteristics?

Meghan is studying interactions between caribou and their wolf predators.This is an example of ___________ ecology.

Jacob is studying a population of wrens in Michigan.Over several years,he notices that the population always stabilizing at around 45 individuals.What is the reason for this?

Different populations living in the same geographical region is a(n)