Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 54, Problem 11TYU
EVOLUTION CONNECTION 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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The most intense interactions often occur between individuals of the same species. What concept discussed in this chapter can be used to explain this phenomenon?
Species facing competition might evolve mechanism that promotes coexistence rather than exclusion. Justify this statement in light of Gause’s competitive exclusionprinciple, citing suitable examples.
Which 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.
Chapter 54 Solutions
Campbell Biology (10th Edition)
Ch. 54.1 - Explain how competition, predation, and mutualism...Ch. 54.1 - According to the principle of competitive...Ch. 54.1 - Prob. 3CCCh. 54.2 - What two components contribute to species...Ch. 54.2 - How is a food chain different from a food web?Ch. 54.2 - Prob. 3CCCh. 54.3 - Why do high and low levels of disturbance usually...Ch. 54.3 - Prob. 2CCCh. 54.3 - WHAT IF? Most prairies experience regular fires,...Ch. 54.4 - Describe two hypotheses that explain why species...
Ch. 54.4 - Prob. 2CCCh. 54.4 - WHAT IF? Based on MacArthur and Wilson's island...Ch. 54.5 - What are pathogens?Ch. 54.5 - WHAT IF? Rabies, a viral disease in mammals, is...Ch. 54 - Prob. 54.1CRCh. 54 - Based on indexes such as Shannon diversity, is a...Ch. 54 - Is the disturbance pictured in figure 54.25 more...Ch. 54 - How have periods of glaciation influenced...Ch. 54 - Prob. 54.5CRCh. 54 - Prob. 1TYUCh. 54 - The principle of competitive exclusion states that...Ch. 54 - Based on the intermediate disturbance hypothesis,...Ch. 54 - According to the island equilibrium model, species...Ch. 54 - Prob. 5TYUCh. 54 - Prob. 6TYUCh. 54 - Prob. 7TYUCh. 54 - The most plausible hypothesis to explain why...Ch. 54 - Community 1 contains 100 individuals distributed...Ch. 54 - Prob. 10TYUCh. 54 - EVOLUTION CONNECTION Explain why adaptations of...Ch. 54 - Prob. 12TYUCh. 54 - WRITE ABOUT A THEME: INTERACTIONS In Batesian...Ch. 54 - Prob. 14TYU
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- Please solvearrow_forwardBriefly explain 3 adaptive responses that an organism might show to minimize the negative effects of competition. These responses might be regulatory, evolutionary, or anything else that is ecologically relevant.arrow_forwardBiologically, what conditions are necessary for stable coexistence of competitors? Describe the major ways that species can adapt to enhance the probability of stable coexistence.arrow_forward
- Under which scenario can a hawk successfully invade (or persist among) a population of doves? Group of answer choices C) Lowest resource value (V << C) D) Options A and B E) Options B and C F) Options A, B, and C B) Lower resource value relative to cost (i.e., V > C and V < 2*C) A) When high resource value relative to cost (i.e., V = 2*C)arrow_forwardSpecies interactions can be categorized into five different groups. List, define them, and provide an example of each.arrow_forwardGiven two interacting species where K1=3700, K2=1800, α1,2=1.25, and α2,1= 1.48, draw a state space diagram of the competition between these two species (label all axes and intercepts). Which species wins?arrow_forward
- Draw on one graph, with N2 on the y-axis and N1 on the x-axis, the isoclines for the twocompetitors with the carrying capacities and competition coefficients listed below. Will thesespecies coexist? If not, which species will win? Competitor 1 Competitor 2 K1 = 200, α12 = 0.4 K2 = 400, α21 =1arrow_forwardExplain the similarities and differences between intraspecific competition among species an interspecific competition Similarities Differencesarrow_forwardConsider two species A and 8, with natural growth rates rA = 2 and re = 4 respectively, and natural carrying capacities MA = 600 and MB = 20, respectively. Suppose the species interact so that e = 0.5 and eg = 0.1. (a) If the species interact according to competition: (Give your answers correct to at least two decimal places.) The interesting equilibrium occurs when A = and B = If the initial populations are A(0) = 2 and B(0) = 1, one of the two species eventually dominates. Which one? O Species A O Species B !3! What is the long-term population of this dominant species? (Give your answer correct to the nearest integer.) (b) If the species interact according to symbiosis: (Give your answers correct to the nearest integer.) The interesting equilibrium occurs when A= and 8- If the initial populations are A(0) - 39 and B(0) = 4, what happens? O one species dies off O both species die off O both species survive (c) If the species interact according to commensalism: (Give your answers…arrow_forward
- what are some plausible phenotypic changes that we might see in different vector species as climate change progresses? How might these changes affect interspecific competition?arrow_forwardCan you please help find the answer that is reasonable base on this chart?arrow_forwardWhich of the following regarding species interactions is INCORRECT? a) The net effects of a mutualism on each participant is a fixed characteristic of the interaction, and is rarely influenced by external factors. b) Reciprocal parasitism is an accurate way of describing many mutualistic interactions. c) The Lotka-Volterra competition model accounts for the effects of both interspecific and intraspecific competition.arrow_forward
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