BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 55, Problem 1U
Studies that demonstrate that species living in an ecological community change independently of one another in space and time
a. indicate that the species arrived in the community at different times.
b. indicate that the species’ realized niches are regulated by different aspects of the environment.
c. suggest species interactions are the sole determinant of which species coexist in a community.
d. None of the choices is correct.
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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
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
Disturbancescan alter a community’s stable environmental conditions, also called its:a.frequency.b.intensity.c.heterogeneity.d.equilibrium.e.niche space.
Chapter 55 Solutions
BIOLOGY
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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- 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_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_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_forward
- 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.arrow_forwardIn landscape ecology, the matrix is the area surrounding a habitat patch. The matrix can affect a species living in the habitat patch by altering: O A. Dispersal between patches B. The availability of resources C. The abiotic environment in patches D. Our appreciation of Keanu Reeves' acting skills E. A, B and C are correctarrow_forwardConsider an ecological network consisting of three interconnected habitats (A BCA). Ecologists want to model the occupancy dynamics of a particular species "Species" across these habitats over time using a discrete time discrete state stochastic process. State Space: State 0: Species X is absent from all habitats. State 1: Species X is present in Habitat A State 2 : Species X is present in Habitat B. State 3: Species X is present in Habitat C. State 4: Species X is present in Habitats A&B State 5: Species X is present in Habitats A&C. State 6: Species X is present in Habitats B&C. State 7: Species X is present in All Habitats. Transition Probabilities: Rule 1: The probability of colonizing an adjacent habitat is 0.2. Rule 2: The probability of extinction from a habitat is 0.15. Rule 3: The probability of recolonization of a random habitat is 0.1 A) Draw a schematic diagram of the Markov Process illustrating states and transitions. Define the transition rate matrix forthis discrete time…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_forwardThe average niche breadth for space resources is narrow for a community of intertidal organisms. This pattern would indicate… a. a fewer number of species in the community b. niche overlap is high c. resource partitioning d. high levels of disturbance e. extinction via competitive exclusionarrow_forwardWhen two different species overlap in the same biological niche, they are a in competition with one another. b in a mutualistic interaction. c dependent on one another. d unaffected by one another. e dependent on different food supplies.arrow_forward
- 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.arrow_forwardAlthough 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_forwardSpatial scales are interconnected in a hierarchical way. Whitman looked at invertebrate communities on subtidal rock walls to examine the relationship between local and regional species richness. His studies demonstrated that A. local, not regional, processes determine local community species diversity B. local species richness levels off at high regional species richness levels C. local species richness is determined largely, but not completely, by regional species pools D. local processes are unimportant in determine local community species diversity E. There was no relationship between local and regional species richnessarrow_forward
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