BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 58, Problem 1A
Historically, island species have tended to become extinct faster than species living on a mainland. Which of the following reasons can be used to explain this phenomenon?
a. Island species have often evolved in the absence of predators and have no natural avoidance strategies.
b. Humans have introduced diseases and competitors to islands, which negatively affect island populations.
c. Island populations are usually smaller than mainland populations.
d. All of the choices are correct.
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Students have asked these similar questions
An extinction vortex describes
a) changes in a population’s gene pool that lead to a loss in fitness across time.
b) a species ability to adapt to changes in their environment.
c) the continuous series of extinctions caused by competition between species.
d) a population that has a reduction in fitness because it cannot escape a Hardy-Weinberg Equilibrium.
Why are species that live at the tops of mountains at increased risk of extinction due to climate change?
a.
The colder temperatures at the tops of mountains gradually increase, and the species at the tops of the mountains are displaced by species at lower elevations moving up.
b.
The species at the tops of the mountains are adapted to moving up and down the mountains and species at lower elevations are displacing them as they move down the mountains.
c.
The species at the tops of the mountains are adapted to lower oxygen and climate change increases oxygen content in the air.
d.
Species at the tops of mountains do not have the genetic diversity for adaptation that lower-elevational species do. Therefore species at the tops of the mountains are more likely to go extinct.
In which situation will populations experience gene flow?
A)hybridization between two populations of ground beetles
B)natural-selection pressures between two populations of dragonflies
C)mate competition between two populations of red-legged grasshoppers
D)intersecting migration routes between two populations of monarch butterflies
Chapter 58 Solutions
BIOLOGY
Ch. 58.1 - Describe the history of extinction through time.Ch. 58.1 - Prob. 2LOCh. 58.2 - Prob. 1LOCh. 58.2 - Prob. 2LOCh. 58.3 - Prob. 1LOCh. 58.3 - Explain how these causes can interact to bring...Ch. 58.4 - Prob. 1LOCh. 58.4 - Describe the potential roles of natural selection...Ch. 58.4 - Prob. 3LOCh. 58.5 - Prob. 1LO
Ch. 58.5 - Prob. 2LOCh. 58.5 - Prob. 3LOCh. 58 - If we assume that population density is a good...Ch. 58 - Prob. 2DACh. 58 - Would the extinction rate increase if an area were...Ch. 58 - Prob. 4DACh. 58 - Why do population density and growth rates differ...Ch. 58 - Why might whale populations fail to recover once...Ch. 58 - Why do small populations lose genetic variation?Ch. 58 - Prob. 1UCh. 58 - The economic value of indirect ecosystem services...Ch. 58 - The amphibian decline is best described as a....Ch. 58 - Prob. 4UCh. 58 - When populations are drastically reduced in size,...Ch. 58 - A captive-breeding program followed by release to...Ch. 58 - Historically, island species have tended to become...Ch. 58 - Ninety-nine percent of all the species that ever...Ch. 58 - To effectively address the biodiversity crisis,...Ch. 58 - The introduction of a nonnative predator to an...Ch. 58 - If 99% of the species that ever existed are now...Ch. 58 - Prob. 2SCh. 58 - Prob. 3SCh. 58 - Prob. 4SCh. 58 - Prob. 5S
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