BIOLOGY 12TH ED (LL) W/ CONNECT
12th Edition
ISBN: 9781264898091
Author: Raven
Publisher: MCG
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Textbook Question
Chapter 55, Problem 3A
a. always occurs when species have identical niches.
b. may not occur in the presence of a predator, which reduces prey
c. results in the fundamental and realized niches being the same.
d. is more common in herbivores than carnivores.
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According to the competitive exclusion principle,a. one species is always more competitive than another for a particular food source.b. competition excludes multiple species from using the same food source.c. no two species can occupy the same niche at the same time.d. competition limits the reproductive capacity of species.
The average niche breadth for space resources is wide for species of barnacles in an intertidal community. This pattern would indicate…
a.
niche overlap is low
b.
a greater level of competition between species
c.
coexistence via resource partitioning
d.
a greater number of species in the community
e.
high levels of disturbance
Under 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)
Chapter 55 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
Ch. 55.1 - Prob. 1LOCh. 55.1 - Prob. 2LOCh. 55.2 - Prob. 1LOCh. 55.2 - Prob. 2LOCh. 55.2 - Explain how the presence of other species can...Ch. 55.3 - Prob. 1LOCh. 55.3 - Prob. 2LOCh. 55.4 - Explain the different forms of symbiosis.Ch. 55.4 - Prob. 2LOCh. 55.4 - Explain how the occurrence of one ecological...
Ch. 55.5 - Prob. 1LOCh. 55.5 - Describe how early colonizers may affect...Ch. 55.5 - Prob. 3LOCh. 55 - Prob. 1DACh. 55 - Prob. 2DACh. 55 - Prob. 1IQCh. 55 - Prob. 2IQCh. 55 - Prob. 3IQCh. 55 - Prob. 4IQCh. 55 - Prob. 5IQCh. 55 - Prob. 6IQCh. 55 - Prob. 7IQCh. 55 - Studies that demonstrate that species living in an...Ch. 55 - Prob. 2UCh. 55 - According to the idea of coevolution between...Ch. 55 - In order for mimicry to be effective in protecting...Ch. 55 - Which of the following is an example of...Ch. 55 - A species whose effect on the composition of a...Ch. 55 - When a predator preferentially eats the superior...Ch. 55 - Prob. 8UCh. 55 - Prob. 1ACh. 55 - The presence of a predatory species a. always...Ch. 55 - Resource partitioning by sympatric species a....Ch. 55 - Parasitism differs from predation because a. the...Ch. 55 - The presence of one species (A) in a community may...Ch. 55 - Competition is traditionally indicated by...Ch. 55 - Refer to figure 56.9. If the single prey species...Ch. 55 - Prob. 3SCh. 55 - Refer to figure 56.7. Examine the pattern of beak...Ch. 55 - Is it possible that some species function together...
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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_forwardWhat are some conditions that might lead to a mutualistic organism becoming a predator/parasite. Select all that apply. A. Mutualistic nitrogen fixation bacteria might reduce the competitive ability of their host plants in environments with high N availability, because of the energetic costs to the plants of supporting the bacteria B. none of the above C. Mutualistic nitrogen fixing bacteria can become parasites in soil with low nitrogen availability because of the energy costs to the plant of supporting the bacteria D. A mutualist fish species that feeds on ectoparasites of another fish species, might switch to feeding/removing important host tissue or secretions when ectoparasite abundance is too low.arrow_forwardA feeding relationship that proceeds from algae to a fish, then to a fisherman, and then to a shark is _____. a. a food chain b. a food web c. a and barrow_forward
- An ecologist studying several forest-dwelling, insect-eating bird species does not find any evidence of interspecific competition. The most likely explanation is (a) lack of a keystone species (b) low species richness (c) pronounced intraspecific competition (d) coevolution of predatorprey strategies (e) resource partitioningarrow_forwardThe fact that H/G peoples invariably exploit only some of the potential food resources available to them can be explained by a. the carrying capacity of their territory b. their close connection to local markets and agriculturalists c. optimal foraging theory d. their marriage practices controlling land use rights;arrow_forwardInthe Lotka-Volterra predation model, a prey (host) population in the absence ofpredators would:a.grow exponentially.b.grow logistically.c.grow exponentially, and then crash when it has outstripped its own foodsupply.d.decline to extinction.e.the model makes no assumptions about what happens in the absence ofpredators.arrow_forward
- 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 overlaparrow_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_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_forward
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