Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 2SQ
According to the concept of competitive exclusion,
- a. two species cannot coexist in the same habitat.
- b. extinction or emigration is the only possible result of competitive interactions.
- c. intraspecific competition results in the success of the best-adapted individuals.
- d. two species cannot share exactly the same niche in a community.
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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.
Which of the following defines the role of a species in a community,including its habitat and interaction with other species?a. ecological niche d. mimicryb. competitive exclusion e. None of these are correct.c. competition level
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.
Chapter 20 Solutions
Campbell Essential Biology (7th Edition)
Ch. 20 - Prob. 1SQCh. 20 - According to the concept of competitive exclusion,...Ch. 20 - Prob. 3SQCh. 20 - Prob. 4SQCh. 20 - Why are the top predators in food chains most...Ch. 20 - Over a period of many years, grass grows on a sand...Ch. 20 - According to the energy pyramid, why is eating...Ch. 20 - Local conditions, such as heavy rainfall or the...Ch. 20 - Prob. 9SQCh. 20 - Prob. 10SQ
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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
- The figure below shows the growth of two species in two habitats, both when the other species is present and when it is absent. What kind of interaction is occurring between these two species? (Consider both habitats, not just the interaction within one particular habitat.) Answer choices: A. Mutualism B. Conditional C. Commensalism D. Competition E. Parasitismarrow_forwardCompetitive 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 overlaparrow_forwardEcological dominants are a. the most numerous or make up the most biomass within a community. b. are species that may not be the most numerous within a community, but whose role is so significant that its absence would bring about considerable change. c. species that are introduced into an area where they do not naturally occur. d. the most important species on the planet.arrow_forward
- How can a commensalism become a mutualism? a. A commensalism cannot become a mutualism. b. An interaction that was once harmful to one species becomes beneficial to both species. c. An interaction that was once harmful to both species becomes beneficial to one species. d. An interaction that was once beneficial to both species becomes beneficial to only one species. e. An interaction that was once beneficial to one species becomes beneficial to both species.arrow_forward1. Which of the following is most true about interspecific competition? a. It involves interaction between individuals of the same species. b. It is the greatest between organisms that occupy different ecological niches. c. It can be easily demonstrated to occur in natural environments. d. It is the greatest between organisms that physically share similar ecological niches. e. It increases with resource partitioning. 2. Which of the following is true in relation to predation: a. The predator is negatively affected and the prey is positively affected. b. The predator population always increases and the prey population always decreases in size. c. The predator-prey population cycle exhibits a sinusoidal pattern on a graph. d. The prey can never be protected against its predator. e. The snowshoe hare and lynx cycling study demonstrated that predator-prey cycling is not influenced by any other factors. 3. Water that is used in the production of a good or a service, is referred to as: a)…arrow_forwardRed and gray squirrels actively fight over tree space for nest building in my backyard. Injuries have been observed, and the presence of one species limits the survival and reproduction of the other. What type of competition is this? A. Interference B. Exploitation C. Allelopathy O D. Logistic E. Hierarchalarrow_forward
- As the density of a population of crickets increases, the abundance of their food (plants) decreases, and there is a corresponding decrease in the population growth rates of crickets. As adult crickets forage they are observed chirping (vocalization) and share the best feeding locations. This interaction is an example of … a. interspecific interference competition b. intraspecific exploitative competition c. interspecific exploitation competition d. intraspecific interference competitionarrow_forwardA species of cleaner fish removes parasites from another species of fish that is much bigger in size. The big fish keeps cleaner fish predators away. This type of species interaction is classified as: A. Mutalism B. Competition C. Neutralism D. Antagonismarrow_forwardUnder what conditions can the realized niche of a species exceed its fundamental niche? a. never b. when the species is transported out of its natural geographic range c. when the species experiences mutualistic interactions with another species d. when the species is relieved of competition with another species e. all of the above (except for never)arrow_forward
- 1. Species interactions shape biological communities through competition for space, food and mates, and also by predation and symbiotic relationships. a. Define intraspecific competition and give ONE example of how species reduce the competition. b. Define interspecific competition and give ONE example. c. Discuss the TWo types of mimicry adaptations that help some species avoid predation and the role of coloration.arrow_forwardA 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_forwardhow does each of these factors influences the variation in the geographic distribution of species. Species interactions a. Predation b. Competition c. Mutualism d.Parasitism 2. Anthropogenic influencearrow_forward
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