Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 54.1, Problem 2CC
According to the principle of competitive exclusion, what outcome is expected when two species with identical niches compete for a
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According to the competitive exclusion principle, two species cannot exist together if they occupy the same niche. Either they diverge their niches so they can coexist or one species will die out.All of the following are consistent with the principle of competitive exclusion EXCEPT
Select one:
a. Birds and bats both consume flying insects, but birds are active in the day and bats are active at night.
b. Two species that share the same niche will exclude other competing species.
c. Different bird species forage for insects in different parts of the same tree.
d. When two species of Paramecium are grown in the same medium, one strain will eventually eliminate its competitor.
When one species is better at obtaining and holding space than another, it is competitively
dominant. Based on the diagram which non-mobile (sessile) species is the dominant competitor in
the intertidal? Which is second? Rank the six non-mobile species from (1) most to (6) least
competitively dominant. Below are the competitive arrows from the slides (recall that sessile
consumers are superior competitors over the algal species).
gooseneck
barnacle
mussel
acorn barnacle
coral weed
black pine
Primary Producers
nori seaweed
1= strongest competitor and 6= weakest competitor
common coral weed
[ Choose ]
nori seaweed
[ Choose ]
black pine algae
[ Choose ]
mussels
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acorn barnacles
[ Choose ]
gooseneck barnacles
[ Choose ]
>
>
>
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Competitive exclusion occurs under the following conditions:
a. when fundamental niches overlap and competition is asymmetric
b. when realized niches overlap and competition is asymmetric
c. when fundamental niches overlap and competition is symmetric
d. when realized niches overlap and competition is symmetric
e. when competition is excluded because niches do not overlap
Chapter 54 Solutions
Campbell Biology (11th Edition)
Ch. 54.1 - Explain how competition, predation, and mutualism...Ch. 54.1 - According to the principle of competitive...Ch. 54.1 - MAKE CONNECTIONS Figure 24.14 illustrates how a...Ch. 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. 54.2 - MAKE CONNECTIONS Rising atmospheric CO2, levels...Ch. 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 - Interspecific interactions affect the survival and...Ch. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In a food web, two different species can directly affect each other’s abundance via _ competition or may in fact have their abundance indirectly regulated by a higher trophic level, a phenomenon called ____ competition. a) Intraspecific, apparent b) Interspecific, apparent c) Intraspecific, apparent d) Apparent, interspecificarrow_forwardDescribe and give (an example) the following relationships between organisms. a) predation b) parasitism c) mutualismarrow_forwardExplain the premise of the Lotka-Volterra Competition Model and what it tells us about the competitive exclusion principlearrow_forward
- Which 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_forwardWhich of the following is not an abiotic factor in an ecosystem? A) Available light B) Temperature Water availability Number of organisms in a populationarrow_forwardWhat is the competitive exclusion principle? List another example where this principle is demonstrated in the natural world.arrow_forward
- In any ecosystem, there are less top level predators then there are primary producers. Describe why this occurs in every ecosystem.arrow_forwardK-selected species typically a) have short life spans b) display a logistic graph c) are more competitive than r-selected species d) live close to the biotic potential, taking advantage of the environmental conditionsarrow_forwardWhich of the following scenarios may demonstrate an organism selecting a resource non-randomly? (Hint: think about the availability versus use of each type of resource .) a. )A tide pool contains twice as many red urchins as purple urchins. Otters eat twice as many red urchins as purple urchins . B. ) In a desert with equal numbers of creosote and saltbush, ants gather only creosote seeds. C. ) In a desert of only creosote bushes, ants gather creosote seeds. D. ) A tide pool contains twice as many purple urchins as red urchins. Otters eat twice as many red urchins as purple urchins.arrow_forward
- An 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_forwardIf you were to remove one of these species, which of these would cause a great impact on the majority of the species? a) phytoplankton b) herring c) humpback whale d) krillarrow_forwardA species of barnacle may be able to exploit a large volume of habitat but due to competition from other species this barnacle is confined to a smaller area within the larger volume. This area where the barnacle is acutally found is its __________. A) working space B) crevice C) fundamental niche D) realized niche E) potential nichearrow_forward
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