Question 1

Which of the following populations has the greatest biotic potential?

Accepted Answer

A)   Population A in which females start to reproduce at 1 year and produce 2 offspring each year.
B)   Population B in which females reach sexual maturity in 6 months and produce 1 offspring each 12-monthreproductive cycle.
C)   Population C in which males reach sexual maturity in just 3 months.
D)   Population D in which individuals reach sexual maturity in 6 months and produce 5 offspring each year.
E)   Population E in which individuals produce 5 offspring starting at 5 years of age.F) C) and D)
G) A) and B)

Question 2

Which of the following is true about populations with a negative growth rate?

Accepted Answer

A)   The death rate exceeds the birthrate.
B)   The population will remain the same size for several generations.
C)   The age structure diagram looks like a pyramid.
D)   The population has reached its carrying capacity.
E)   The majority of the population is prereproductive.F) A) and B)
G) C) and E)

Question 3

Schools of parrot fish tend to remain within close proximity to coral reefs for protection from predators and for easy access to food sources. What type of distribution does this represent?

Accepted Answer

A)   clumped
B)   random
C)   dense
D)   uniform
E)   independentF) B) and C)
G) All of the above

Question 4

All of the following are true of BOTH logistic growth and exponential growth except

Accepted Answer

A)   they both have a lag phase.
B)   they both have an exponential growth phase.
C)   they both have a stable equilibrium phase.
D)   they are both a type of population growth.
E)   they are influenced by resource availability.F) All of the above
G) B) and D)

Question 5

Which of the following statements is correct about the comparison between MDCs and LDCs?

Accepted Answer

A)   MDCs consume 4 timesas many metals and 3 times as much paperas LDCs.
B)   MDCs consume twice as much paper and 4 times as many metals as LDCs.
C)   The population of MDCsis growing twice as fast as the population of LDCs.
D)   MDCs produce 10 timesas much hazardous waste and consume 3 times as much paper as LDCs.
E)   MDCs consume 3 times as many metals and 4 times as much paperas LDCs.F) D) and E)
G) C) and E)

Question 6

A population growth curve that exhibits both exponential growth and a stable equilibrium phase is

Accepted Answer

A)   growing exponentially.
B)   growing logistically.
C)   unsustainable.
D)   not yet at its carrying capacity.
E)   exhibiting a J-shaped curve.F) A) and B)
G) B) and E)

Question 7

All of the following impact a population's ability to reach biotic potential except

Accepted Answer

A)   resource abundance.
B)   the number of offspring produced each reproductive cycle.
C)   chances of survivorship until sexual maturity.
D)   how frequently each individual in the population reproduces.
E)   the age at which reproduction ends.F) A) and C)
G) A) and E)

Question 8

Which of the following descriptions about survivorship curves is mismatched?

Accepted Answer

A)   Black bear females usually produce just one cub. The cub nurses from the female for several months and can remain with the mother for up to two years. - Type I
B)   Each spring an oak tree drops thousands of seeds, but only a few will ever reach sexual maturity. - Type III
C)   Daphniaare planktonic crustaceans that produce offspring every three weeks. One Daphnia produces eight offspring, and after 1.5 weeks, four of these individuals are still alive. - Type II
D)   Female giant pandas generally raise one cub at a time and their cubs may stay with their mothers for up to three years before striking out on their own.. - Type II
E)   As adults, female leatherback sea turtles return to the beaches where they hatched to lay their own brood. One female produces approximately 600 eggs, but at least 400 of these will be eaten before they ever reach the ocean. - Type IF) A) and D)
G) B) and D)

Question 9

What is meant by an organism's biotic potential?

Accepted Answer

A)   The rate at which the population grows.
B)   The number of offspring that an organism produces over its entire life span.
C)   The age at which an organism reaches sexual maturity.
D)   The number of individuals in the prereproductive stage.
E)   The maximum rate of population growth with unlimited resources.F) C) and E)
G) D) and E)

Question 10

Equilibrium populations tend to exhibit a type III survivorship curve.

Accepted Answer

A)   True, because individuals tend to have fewer offspring and provide extensive parental care.
B)   False, because individuals tend to have lots of offspring with no parental care.
C)   True, because all individuals in the equilibrium populations are large and live for a long period of time.
D)   True, because there are high rates of mortality early in life.
E)   False, because equilibrium populations tend to have low mortality rates early in life.F) A) and C)
G) D) and E)

Question 11

During a recent hurricane, 25 individuals of the same butterfly species were blown onto a barrier island in southern Florida. The hurricane which lead to the arrival of the butterflies on the island is an example of a _____ factor.

Accepted Answer

A)   clumped
B)   random
C)   density-dependent
D)   density-independent
E)   dispersedF) A) and D)
G) A) and B)

Question 12

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. When the butterflies initially arrived on the island, they did not have to compete for food or space. What type of population growth did they likely exhibit?

Accepted Answer

A)   logistic
B)   exponential
C)   density-dependent
D)   density-independent
E)   logarithmicF) C) and E)
G) B) and C)

Question 13

A butterfly species has very wide distribution across southern Florida. In addition, the adults and caterpillars can use a wide array of plant species as a food source and also tolerate a broad range of temperatures. Based on these criteria, this species is unlikely to face extinction in the immediate future.

Accepted Answer

A)   True, because they have a restricted geographic range.
B)   False, because they have an extensive geographic range.
C)   True, because they have broad habitat tolerances.
D)   False, because all the local populations on the mainland and island are small.
E)   True, because they have narrow habitat tolerances.F) A) and D)
G) A) and E)

Exam 30: Ecology and Populations

A population growth curve that exhibits both exponential growth and a stable equilibrium phase is

Correct Answer
verified

Which of the following is true about populations with a negative growth rate?

Correct Answer
verified

All of the following are true of BOTH logistic growth and exponential growth except

Correct Answer
verified

Correct Answer
verified

Which of the following statements is correct about the comparison between MDCs and LDCs?

Correct Answer
verified

Which of the following descriptions about survivorship curves is mismatched?

Correct Answer
verified

During a recent hurricane, 25 individuals of the same butterfly species were blown onto a barrier island in southern Florida. The hurricane which lead to the arrival of the butterflies on the island is an example of a _____ factor.

Correct Answer
verified

All of the following impact a population's ability to reach biotic potential except

Correct Answer
verified

What is meant by an organism's biotic potential?

Correct Answer
verified

Schools of parrot fish tend to remain within close proximity to coral reefs for protection from predators and for easy access to food sources. What type of distribution does this represent?

Correct Answer
verified

Which of the following populations has the greatest biotic potential?

Correct Answer
verified

Correct Answer
verified

Equilibrium populations tend to exhibit a type III survivorship curve.

Correct Answer
verified

Exam 30: Ecology and Populations

A population growth curve that exhibits both exponential growth and a stable equilibrium phase is

Correct AnswerverifiedShow Answer

Which of the following is true about populations with a negative growth rate?

Correct AnswerverifiedShow Answer

All of the following are true of BOTH logistic growth and exponential growth except

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following statements is correct about the comparison between MDCs and LDCs?

Correct AnswerverifiedShow Answer

Which of the following descriptions about survivorship curves is mismatched?

Correct AnswerverifiedShow Answer

During a recent hurricane, 25 individuals of the same butterfly species were blown onto a barrier island in southern Florida. The hurricane which lead to the arrival of the butterflies on the island is an example of a _____ factor.

Correct AnswerverifiedShow Answer

All of the following impact a population's ability to reach biotic potential except

Correct AnswerverifiedShow Answer

What is meant by an organism's biotic potential?

Correct AnswerverifiedShow Answer

Schools of parrot fish tend to remain within close proximity to coral reefs for protection from predators and for easy access to food sources. What type of distribution does this represent?

Correct AnswerverifiedShow Answer

Which of the following populations has the greatest biotic potential?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Equilibrium populations tend to exhibit a type III survivorship curve.

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified