Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 28, Problem 3MC
Summary Introduction
Introduction: A community involves many species that depend on the special type of species, termed as a keystone species. Some ecologists use the strategy of removing each species artificially to identify the keystone species.
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Which of the following best describes a keystone species?
a. An organism, whose introduction causes or is likely to cause environmental harm
b. An organism, who if removed, the entire ecosystem changes.
c. Can signal a change in the biological condition of a particular ecosystem and diagnose the health of that ecosystem
d. Can indirectly protect several other species in the same habitat
Predators that are keystone species can maintain species diversity in a community if theya) reduce the number of disruptions in the community.b) prey only on the least abundant species in the community.c) prey on the community's dominant species.d) competively exclude other predators
Which of the following statements about keystone species is false?
a) Keystone species are the most common (abundant) species in their ecosystem.
b) The reintroduction of wolves into Yellowstone Park increased biodiversity.
c) Removal of a keystone species can drastically change an ecosystem.
d) Keystone species have a much greater effect on the functioning of their ecosystems than other species.
Chapter 28 Solutions
Biology
Ch. 28.1 - Prob. 1CYLCh. 28.1 - Prob. 2CYLCh. 28.2 - Prob. 1CSCCh. 28.2 - Prob. 1CTCh. 28.2 - Prob. 1CYLCh. 28.2 - explain how competitive exclusion leads to...Ch. 28.2 - explain how interspecific competition can affect...Ch. 28.3 - Prob. 1TCCh. 28.3 - Prob. 1HYEWCh. 28.3 - Prob. 2TC
Ch. 28.3 - Prob. 3TCCh. 28.3 - Prob. 1CYLCh. 28.3 - Prob. 2CYLCh. 28.3 - Prob. 3CYLCh. 28.3 - Prob. 4CYLCh. 28.3 - Prob. 5CYLCh. 28.4 - Prob. 1TCCh. 28.4 - describe some mutualistic interactions and how...Ch. 28.4 - Prob. 2CYLCh. 28.5 - Prob. 1CSCCh. 28.5 - Prob. 1CYLCh. 28.5 - Prob. 2CYLCh. 28.6 - People have suppressed fires for decades. How...Ch. 28.6 - Prob. 2TCCh. 28.6 - explain the process of succession and its general...Ch. 28.6 - describe primary succession and secondary...Ch. 28.6 - explain what a climax community is and what a...Ch. 28.6 - Prob. 3TCCh. 28 - Prob. 1MCCh. 28 - Which of the following statements is not true of...Ch. 28 - Prob. 3MCCh. 28 - Prob. 4MCCh. 28 - Prob. 5MCCh. 28 - Prob. 1FIBCh. 28 - Prob. 2FIBCh. 28 - Prob. 3FIBCh. 28 - Prob. 4FIBCh. 28 - Prob. 5FIBCh. 28 - Prob. 6FIBCh. 28 - Define an ecological community, and describe the...Ch. 28 - Prob. 2RQCh. 28 - Prob. 3RQCh. 28 - Prob. 4RQCh. 28 - Provide examples of two climax and two subclimax...Ch. 28 - Prob. 6RQCh. 28 - Prob. 7RQCh. 28 - Prob. 1ACCh. 28 - Prob. 2ACCh. 28 - Prob. 3AC
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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
- Converting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardWhen an invasive species alters the community structure it is introduced to, what can the consequence be? a. extinction of economically important species b. reduced predation on some native species c. increased predation on some native species d. all of the abovearrow_forwardDescribe the potential effects when a keystone species is removed from a community.arrow_forward
- A 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_forwardThe 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 what happens to an ecosystem when a keystone species is removed.arrow_forward
- 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.arrow_forwardPredators that are keystone species can maintain speciesdiversity in a community if they(A) competitively exclude other predators.(B) prey on the community’s dominant species.(C) reduce the number of disruptions in the community.(D) prey only on the least abundant species in the communityarrow_forwardA keystone species has a(n) ____________________ effect on an ecological community relative to its abundance.arrow_forward
- A keystone species is one whose removal from a community causes extinction of other species. How does this extinction happen?arrow_forwardDisturbance often affects community structure by __________________. Question 24 options: A) accelerating competitive exclusion B) temporarily decreasing the resource base, then increasing the resource base C) increasing the degree to which a resource is limited D) temporarily increasing the resource base, then decreasing the resource basearrow_forwardWhat is a keystone species and why do these species play such an important role in their community structure? If a keystone species were to go extinct what would happen to their community? Once you have answered those questions give me an example of a keystone species.arrow_forward
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