Biology Biology Practice Problems Solutions Library

Population Ecology Solutions Library

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39 solutions

Population Ecology

Q. A(n) _____ is a group of interbreeding members of the same species in a particular areaA. frequency B. incidence C. populationD. equilibriumE. gene...

Solved • May 7, 2020

Population Ecology

Q. How long will it take a population of 550 moose to double if 25 offspring are born and 14 moose die on average per year?a) 26.9 yearsb) 34.5 yearsc...

Solved • Apr 22, 2020

Population Ecology

Q. The equations used in the tutorial apply to populations over short time intervals. Why can they not be applied to populations over very long time p...

Solved • Apr 22, 2020

Population Ecology

Q. What is meant by the term “doubling time” and how did changing values for N0 affect the doubling time of a population?a) Doubling time is the amoun...

Solved • Apr 22, 2020

Population Ecology

Q. How do changing values for r affect the growth rate of a population?a) Populations grow when r is negative, remain constant when r is positive, and...

Solved • Apr 22, 2020

Population Ecology

Q. Carrying capacity is influenced by all of the following except ____. (NOTE: the species for which the K is calculated is in parentheses.)A. Nesting...

Solved • Sep 9, 2018

Population Ecology

Q. What is meant by ecological fallacy?

Solved • Aug 1, 2018

Population Ecology

Q. Epidemiology is the study of _____.A. the historical diseases that impacted societyB. the epidermis of the skinC. pathogens and their counterpartsD...

Solved • Aug 1, 2018

Population Ecology

Q. An asexual population consists of N = 2 individuals. Each individual has 2 offspring and dies. The probability that each offspring dies before next...

Solved • Jul 24, 2018

Population Ecology

Q. Describe the difference between exponential growth and logistic growth.

Solved • Jul 16, 2018

Population Ecology

Q. What is a carrying capacity? Why is understanding the carrying capacity important in understanding population growth?

Solved • Jul 16, 2018

Population Ecology

Q. Predator-prey populations provide a good example for "Co-evolution". Explain what you understand as "co- evolution".

Solved • Jun 20, 2018

Population Ecology

Q. Ecological interactions can be divided into categories based on whether only one of the interacting parties benefits (+/-) or both benefit (+/+) or...

Solved • Jun 13, 2018

Population Ecology

Q. What is Symbiosis? Distinguish between and describe the various types.

Solved • Jun 8, 2018

Population Ecology

Q. Explain why cane toads were effective ecological invaders. Include at least three factors.

Solved • May 17, 2018

Population Ecology

Q. Compare and contrast commensalism, predation, competition, mutualism, and parasitism. Give an example of each, naming the species involved and brie...

Solved • May 15, 2018

Population Ecology

Q. In some habitats with few species, the food web may become closer to a food chain: only a couple of herbivore species and even fewer carnivores. Co...

Solved • May 11, 2018

Population Ecology

Q. Distinguish between mutualistic and parasitic symbioses. Give examples of each.

Solved • May 7, 2018

Population Ecology

Q. To measure the population density of monarch butterflies occupying a particular park, 100 butterflies are captured, marked with a small dot on a wi...

Solved • Nov 27, 2017

Population Ecology

Q. The observation that members of a population are uniformly distributed suggests that a. resources are distributed unevenly. b. the members of the...

Solved • Nov 21, 2017

Population Ecology

Q. Analyzing ecological footprints reveals thata. Earth's carrying capacity would increase if per capita meat consumption increased.b. current demand ...

Solved • Nov 21, 2017

Population Ecology

Q. Scientific study of the population cycles of the snowshoe hare and its predator, the lynx, has revealed that a. predation is the dominant factor a...

Solved • Nov 21, 2017

Population Ecology

Q. A population's carrying capacity a. may change as environmental conditions change. b. increases as the per capita population growth rate decrease...

Solved • Nov 21, 2017

Population Ecology

Q. Population ecologists follow the fate of same-age cohorts toa. determine a population's carrying capacity.b. determine the birth rate and death rat...

Solved • Nov 21, 2017

Population Ecology

Q. Which of the following traits is characteristic of K-selected populations?a. offspring with good chances of survivalb. many offspring per reproduct...

Solved • Nov 21, 2017

Population Ecology

Q. Use the graph to answer the following question.Looking at the data in the figure, what can be said about survival and clutch size?a. Animals with l...

Solved • Nov 21, 2017

Population Ecology

Q. According to the logistic growth equation, dN/dt = rN (K-N)/K, ________.a. the number of individuals added per unit time is greatest when N is clos...

Solved • Nov 21, 2017

Population Ecology

Q. Which of the following causes populations to shift most quickly from an exponential to a logistic population growth?a. favorable climatic condition...

Solved • Nov 21, 2017

Population Ecology

Q. Which of the following graphs illustrates the population growth curve starting with a single bacterium growing in a flask of ideal medium at optimu...

Solved • Nov 21, 2017

Population Ecology

Q. Use the graph to answer the following question.Which of the following examples are plausible explanations for a population that would produce curve...

Solved • Nov 21, 2017

Population Ecology

Q. Use the survivorship curves in the figure to answer the following question. Which statement best explains survivorship curve B? a. It is likely a...

Solved • Nov 21, 2017

Population Ecology

Q. Which of the following groups would be most likely to exhibit uniform dispersion?a. red squirrels, who actively defend territoriesb. cattails, whic...

Solved • Nov 21, 2017

Population Ecology

Q. To measure the population of lake trout in a 250-hectare lake, 400 individual trout were netted and marked with a fin clip, then returned to the la...

Solved • Nov 21, 2017

Population Ecology

Q. Which of the following is the most important assumption for the mark-recapture method to estimate the size of wildlife populations?a. More individu...

Solved • Nov 21, 2017

Population Ecology

Q. Suppose researchers marked 800 turtles and later were able to trap a total of 300 individuals in that population, of which 150 were marked. What is...

Solved • Nov 21, 2017

Population Ecology

Q. The following question refer to the figure below, which depicts the age structure of three populations.Which population is in the process of decrea...

Solved • Aug 17, 2017

Population Ecology

Q. Which of the following is a density-independent factor limiting human population growth? a. pollution b. social pressure for birth control c. ea...

Solved • Aug 17, 2017

Population Ecology

Q. In models of sigmoidal (logistic) population growth, _____. a. density-dependent factors affect population growth rate b. new individuals are add...

Solved • Aug 17, 2017

Population Ecology

Q. As N approaches K for a certain population, which of the following is predicted by the logistic equation?a. The growth rate will not change.b. The ...

Solved • Aug 17, 2017