Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 57, Problem 5TY
Summary Introduction
Introduction: Morphological features change over successive generations. A time comes when two same species bear different morphological features, this is referred to as divergence in morphology.
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The use of the same limiting resource by two species is called (A) parasitism, (B) competition, (C) mutualism, (D) optimal foraging, (E) character displacement.
The principle of competitve exclusion states thata) Competition between two species always causes extinction or emigration of one species.b) Two species will stop reproducing until one species leaves the habitat.c) Two species cannot coexist in the same habitat.
d) Two species that have exactly the same niche cannot coexist in a community.
Which 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.
Chapter 57 Solutions
Biology
Ch. 57.1 - Prob. 1CCCh. 57.1 - Prob. 2CCCh. 57.1 - Prob. 1EQCh. 57.1 - Prob. 2EQCh. 57.1 - Prob. 3EQCh. 57.2 - Prob. 1CCCh. 57.2 - Prob. 2CCCh. 57.2 - (a) A quahog clam, cless Bavalvia (b) A chlton,...Ch. 57.2 - Prob. 3CCCh. 57.2 - Prob. 2CS
Ch. 57.2 - Core Skill: Connections More than 4,500 species of...Ch. 57.3 - Prob. 1CCCh. 57.3 - Prob. 1CSCh. 57.4 - Prob. 1CCCh. 57.4 - Core Skill: Modeling The goal of this modeling...Ch. 57 - Prob. 1TYCh. 57 - Prob. 2TYCh. 57 - Prob. 3TYCh. 57 - In Lacks study of passerine birds in Britain,...Ch. 57 - Prob. 5TYCh. 57 - Prob. 6TYCh. 57 - Prob. 7TYCh. 57 - Prob. 8TYCh. 57 - Prob. 9TYCh. 57 - Prob. 10TYCh. 57 - Prob. 1CQCh. 57 - Prob. 2CQCh. 57 - Prob. 1COQCh. 57 - Prob. 2COQCh. 57 - Prob. 3COQ
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- A predators can feed on several prey species, but prefer to attack those with the weakest defenses. The same predator may shift to a different prey species that becomes more common or more easily overcome when the previousiy preferred prey had acquired better defenses against the predator. This shifting strategy, known as _____________, results in sequential or alternating bouts of pairwise coevolution between many different species. A. resource shifting B. coevolutionary alternation C. ecological character displacement D. cospeciationarrow_forwardIntraspecific competition reduces allelic diversity by Select one: a. relieving predator pressure on the prey population b. allowing K-selected species to have a selective advantage over r-selected species c. creating a competitive advantage to certain alleles d. allowing two different species occupying the same niche to compete for resourcesarrow_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_forward
- Define predation. How does the predator-prey relationship differ from the parasite-host relationship? Why is the evolutionary race be-tween predator and prey one that the predator cannot afford to win?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_forwardWhen interspecific competition is weaker than intraspecific competition for both species A & B in the Lotka-Volterra competition model_________________. a. species A wins b. both species coexist c. both species go extinct d. species B winsarrow_forward
- The association which involves the exchange of nutrients between two species is referred to as: -commensalism -mutualism -predation -antagonsimarrow_forwardAn ecologist visiting an island finds two species of birds, one of which has a slightly larger bill than the other. Interpret this finding with respect to the ecological niche and the competitive exclusion principle, and explain both concepts.arrow_forwardA specie’s ________ is the totality of its adaptations, its use of resources, and its lifestyle. (A) habitat, (B) ecotone, (C) ecological niche, (D) competitive exclusion, (E) coevolution.arrow_forward
- Although a species might be physiologically able to live under a wide range of resource conditions, competitors may restrict its use of resources in a particular location. This is known as a character displacement. b mutualism. c realized niche. d fundamental niche. e interference competition.arrow_forwardWhich of the following statements is correct regarding the competitive exclusion concept? a. multiple species can’t share the exact same niche within a community b. the realized niche of a species is different from its fundamental niche. c. competition within a population results in the success of the best-adapted individuals. d. two species cannot coexist within the same habitat.arrow_forwardDraw a graph where two species compete and species 2 competitively excludes species 1. Use arrows to indicate how this competitive exclusion occurs. LABEL YOUR AXES!arrow_forward
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