Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 28, Problem 3MC
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A keystone speciesa. is always a carnivore.b. has a minor influence on community structure.c. has a major influence on community structure out of proportion to its numbers.d. has a major influence on community structure only when present in large numbers.
According to the Enemy Release Hypothesis:
a.
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b.
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Predators and pathogens have significantly greater ability to invade other habitats than any other organisms
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Chapter 28 Solutions
Biology: Life on Earth (11th Edition)
Ch. 28 - 1. The orderly progress of communities, starting...Ch. 28 - 2. Which of the following statements is not true...Ch. 28 - Prob. 3MCCh. 28 - Prob. 4MCCh. 28 - Prob. 5MCCh. 28 -
1. Organisms that interact serve as agents of...Ch. 28 - Prob. 2FTBCh. 28 -
3. The concept that no two species with identical...Ch. 28 - Prob. 4FTBCh. 28 -
5. Fill in the appropriate type of community...
Ch. 28 -
6. A somewhat predictable change in community...Ch. 28 - Define an ecological community, and describe the...Ch. 28 - Explain how resource partitioning is a logical...Ch. 28 - Describe examples of coevolution between consumers...Ch. 28 - Define succession. Which type of succession would...Ch. 28 - 5. Provide examples of two climax and two...Ch. 28 - Prob. 6RQCh. 28 - Prob. 7RQCh. 28 - Prob. 1ACCh. 28 - Prob. 2AC
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- Akeystone species is one:a.that makes up a very large proportion of total community biomass.b.that feeds on a very large fraction of all available prey species.c.that is fed on by a very large fraction of all predators in itscommunity.d. whose feeding activities have adisproportionate effect on the structure of its community.e.that occupies the lowest level (the base) of the food web.arrow_forwardWhich of the following are factors in determining the stability of a community? Select all correct answers (image is shown)arrow_forwardA keystone species is not necessarily abundant in a community but has a large impact on surrounding species and community structure. True O Falsearrow_forward
- Some attempts to use biological controls prove ineffective. Although the introduced control agent targets only the expected pest species, the control agent does not take hold and spread in its new habitat. Describe some community interactions that could slow or prevent an introduced biological control agent from becoming established in a new habitat.arrow_forwardMaximum population an area can sustain A. Arithmetical Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponentialarrow_forwardThe biggest impacts are made on the environment by: * A. The migration of organisms B. Predation C. Human interference D. Competitionarrow_forward
- The population size of a species capable of being supported by the environment is called its ________. a. limit b. carrying capacity c. biotic potential d. logistic growth patternarrow_forwardDescribe the potential effects when a keystone species is removed from a community.arrow_forwardThe first species to live on new land, such as that formed from volcanic lava, are called_________. a. climax community b. keystone species c. foundation species d. pioneer speciesarrow_forward
- _______________ competition occurs within a population, and _______________ competition occurs among populations of different species. (a) Interspecific; intraspecific (b) Intraspecific; interspecific (c) Type I survivorship; Type II survivorship (d) Interference; exploitation (e) Exploitation; interferencearrow_forwardA symbiotic association in which organisms are beneficial to one another is known as (a) predation (b) interspecific competition (c) intraspecific competition (d) commensalism (e) mutualismarrow_forwardA limiting resource does all the following except that it (a) tends to restrict the ecological niche of a species (b) is in short supply relative to a species need for it (c) limits the presence of a species in a given community (d) results in an intermediate disturbance (e) may be limiting for only part of an organisms life cyclearrow_forward
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