Resource Partitioning
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Questions and Answers

An age structure pyramid that is very wide at the bottom and narrows sharply as you move up, displays a growing ______________ population.

  • Stationary
  • Declining
  • Expanding (correct)
  • Stable
  • If you have an aging population, and not many organisms in their reproductive ages, this population would declining most likely be labeled ______________.

  • Declining (correct)
  • Stationary
  • Stable
  • Expanding
  • List the 5 things an age structure diagram displays. Gender ________________________________ Reproductive Stage ________________________________ Age ________________________________ Sex Ratios ________________________________ Future Growth ________________________________ Sex _________ ratios

  • Gender, Reproductive Stage, Age, Sex Ratios, Future Growth, Sex
  • Gender, Reproductive Stage, Age, Sex Ratios, Future Growth, Ratios
  • Gender, Reproductive Stage, Age, Sex Ratios, Growth, Sex ratios
  • Gender, Reproductive Stage, Age, Sex Ratios, Future Growth, Sex ratios (correct)
  • ______ explain the proportion of males to females.

    <p>Sex ratios</p> Signup and view all the answers

    ____________________ is the seasonal movement of individuals into and out of an area, creating population fluctuations.

    <p>Migration</p> Signup and view all the answers

    Using the survivorship curve below, describe how the likelihood of death varies with age between Type I, II, and III organisms. Type I: Offspring, in their younger years, have a HIGH rate of survival. LARGE numbers of these organisms live into old age. Type II: There is equal death among each age interval. Type III: Offspring, in their younger years, have a LOW rate of survival. SMALL numbers of these organisms live into old age.

    <p>Type I: High rate of survival in older years, Type II: Equal death among each age interval, Type III: Low rate of survival in younger years</p> Signup and view all the answers

    What is the basic difference between density dependent and density independent limiting factors.

    <p>Density dependent factors increase as population density increases, while density independent factors do not depend on population density.</p> Signup and view all the answers

    Which one of these is a keystone species?

    <p>Sea otter</p> Signup and view all the answers

    What is the yellow circle labeled in the image?

    <p>Climax community</p> Signup and view all the answers

    What is the red circle labeled in the image?

    <p>Pioneer lichens</p> Signup and view all the answers

    What type of succession occurs faster than primary succession?

    <p>Secondary succession</p> Signup and view all the answers

    What is the importance of pioneer species in preparing the ecosystem for all future life?

    <p>They break down rock and add organic matter to create soil</p> Signup and view all the answers

    What is the final stage of pond succession shown in the image?

    <p>The swamp</p> Signup and view all the answers

    Why are Zebra and Quagga mussels considered invasive species?

    <p>They out-compete native organisms for resources</p> Signup and view all the answers

    What is the reason for the moderate decrease in the population size of Bald Eagles?

    <p>Decrease in prey population</p> Signup and view all the answers

    What are Keystone species?

    <p>Species with strong and/or wide-reaching effects on a community</p> Signup and view all the answers

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