Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Chapter 41, Problem 7TYU
FOCUS ON EVOLUTION
Explain why adaptations of particular organisms to interspecific competition may not necessarily represent instances of character displacement. What would a researcher have to demonstrate about two competing species to make a convincing case for character displacement?
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Chapter 41 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 41.1 - Explain how interspecific competition, predation,...Ch. 41.1 - According to the principle of competitive...Ch. 41.1 - MAKE CONNECTIONS Figure 22.13 illustrates how a...Ch. 41.2 - What two components contribute to species...Ch. 41.2 - How is a food chain different from a food web?Ch. 41.2 - WHAT IF? Consider a grassland with five trophic...Ch. 41.2 - MAKE CONNECTIONS Rising atmospheric CO2 levels...Ch. 41.3 - Why do high and low levels of disturbance usually...Ch. 41.3 - During succession, how might the early species...Ch. 41.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 41.4 - Describe two hypotheses that explain why species...Ch. 41.4 - Describe how an islands size and distance from the...Ch. 41.4 - WHAT IF? Based on MacArthur and Wilsons island...Ch. 41.5 - What are pathogens?Ch. 41.5 - Prob. 2CCCh. 41 - The feeding relationships among the species in a...Ch. 41 - Prob. 2TYUCh. 41 - Prob. 3TYUCh. 41 - Community 1 contains 100 individuals distributed...Ch. 41 - Prob. 5TYUCh. 41 - SCIENTIFIC INQUIRY An ecologist studying plants in...Ch. 41 - FOCUS ON EVOLUTION Explain why adaptations of...Ch. 41 - FOCUS ON INFORMATION In Bateslan mimicry, a...Ch. 41 - Prob. 9TYU
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- Which of the following best explains the connection between increased competition and the evolution of a species by natural selection? Individuals migrate to another area in order to avoid competition for limited resources in the current ecosystem. Individuals that have traits that allow them to outcompete others survive better and produce more offspring. Individuals must become stronger to compete for resources, and this increased strength is passed on to the next generation. Individuals that must compete for limited resources are more likely to have diseases that cause mutations.arrow_forward1. Describe two types of interactions between two competing species. 2. Explain how potentially competing species may co-exist. 3. Explain resource partitioning. Give an example. 4. Discuss the co-evolution of predator defences. 5. What is mutualism? Discuss in the context of coevolution. 6. Explain optimal foraging 7. Explain the Red Queen view of evolution 8. Explain one problem related to the concept of coevolution. Give an example. 9. What are the 4 examples of social behaviour among species according to Herron and freeman (2015). Discuss one example of each type of interaction.arrow_forwardWhat is intraspecific competition? What are some examples of how the limited quantity of resources affects intraspecific completion? How does intraspecific competition affect species distribution and their evolution?arrow_forward
- Species interactions can be categorized into five different groups. List, define them, and provide an example of each.arrow_forwardYou are studying two new species that have a mutualistic relationship. How would you determine if the mutualism is facultative or obligate? What types of observational data would you collect and what type of experiment would you conduct?arrow_forwardSpecies facing competition might evolve mechanism that promotes coexistence rather than exclusion. Justify this statement in light of Gause’s competitive exclusionprinciple, citing suitable examples.arrow_forward
- Which of the following statements is consistent with the principle of competitive exclusion? Bird species generally do not compete for nesting sites Two species with the same fundamental niche will likely exclude all other species Natural selection tends to increase competition between closely related species When two species are in direct competition for the same resource, one species will eventually prevailarrow_forwardWhich of the following can explain why species are able to coexist, even if the competitive exclusion principle is generally true? a) Species may be competitively equivalent, with the outcome of each competitive encounter being essentially random. b) Competitive exclusion may take many generations; prior to that point, there will be coexistence. c) Spatial heterogeneity in the distribution and concentrations of limiting resources can result in variation in the strength of competition across the landscape. choose all the answers that apply.arrow_forwardBased on the data in the table below, determine whether mutualism will evolve in Species 1 and Species 2. Species 1 Species 2 Fitness of successful mutualists 2 Fitness of unsuccessful mutualist 1 1 Fitness of nonmutualists 1 Proportion of successful mutualists 0.5 0.33 Proportion of unsuccessful mutualist 0.25 0.33 Proportion of nonmutualists 0.25 0.33 Species 2 will evolve a mutualism, species 1 will not evolve a mutualism Species 1 will evolve a mutualism, species 2 will not evolve a mutualism Neither species will evolve a mutualism Both species 1 and 2 will evolve mutualisms 2.arrow_forward
- Describe two interspecific interactions where both species benefit and both species are at a disadvantage. Identify the interaction.arrow_forwardExplain the similarities and differences between intraspecific competition among species an interspecific competition Similarities Differencesarrow_forwardDescribe three drivers of mutualism breakdown. For these drivers of mutualism breakdown, in what ways are the intersection of ecology with evolution important for determining outcomes?arrow_forward
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