Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 53, Problem 5TYK
A keystone species:
a. is usually a primary producer.
b. has a critically important role in determining the species composition of its community.
c. is always a predator.
d. usually reduces the species diversity in a community.
e. usually exhibits aposematic coloration.
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Students have asked these similar questions
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
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.
A keystone species is one whose removal from a community causes extinction of other species. How does this extinction happen?
Chapter 53 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 53.1 - How might natural selection favor a carnivore that...Ch. 53.1 - Prob. 2SBCh. 53.1 - How can field experiments demonstrate conclusively...Ch. 53.2 - Prob. 1SBCh. 53.2 - Prob. 2SBCh. 53.3 - Prob. 1SBCh. 53.3 - Prob. 2SBCh. 53.3 - Prob. 3SBCh. 53.4 - Prob. 1SBCh. 53.4 - Prob. 2SB
Ch. 53.5 - Prob. 1SBCh. 53.5 - Prob. 2SBCh. 53.6 - Prob. 1SBCh. 53.6 - How does a climax community differ from early...Ch. 53.6 - Prob. 3SBCh. 53.7 - Prob. 1SBCh. 53.7 - Prob. 2SBCh. 53 - Prob. 1TYKCh. 53 - The use of the same limiting resource by two...Ch. 53 - Prob. 3TYKCh. 53 - Prob. 4TYKCh. 53 - A keystone species: a. is usually a primary...Ch. 53 - Prob. 6TYKCh. 53 - The change in the species composition of a...Ch. 53 - Prob. 8TYKCh. 53 - Prob. 9TYKCh. 53 - Prob. 10TYKCh. 53 - The table below shows how many individuals were...Ch. 53 - Prob. 12TYKCh. 53 - Prob. 13TYKCh. 53 - Prob. 14TYKCh. 53 - Prob. 1ITD
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- When substances are not broken down in metabolism but stored and passed on to higher trophic levels which of the following processes occurs? Group of answer choices a. Predation b. Coevolution c. Ecological Succession d. Biological Magnification e. Competitionarrow_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_forwardThe _______________ signifies that species richness is greater where two communities meet than at the center of either community. (a) edge effect (b) fundamental niche (c) character displacement (d) realized niche (e) limiting resourcearrow_forward
- Converting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardAn 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_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_forward
- Describe the potential effects when a keystone species is removed from a community.arrow_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
- Predation, disease, and competition are examples of _______________ factors. (a) density-dependent (b) density-independent (c) survivorship (d) dispersal (e) semelparousarrow_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_forwardWhich of the following is a component of an ecosystem but not of an ecological community? (a) a producer (b) water (c) a secondary consumer (d) a primary consumerarrow_forward
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