Campbell Biology: Concepts & Connections (9th Edition)
9th Edition
ISBN: 9780134296012
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Chapter 38, Problem 7TYK
Summary Introduction
Introduction: The conservation biologists have a goal to preserve the species of plants and animals from getting extinct. The most important priority includes the protection of the endemic species from getting extinct. These endemic species are important keystone species, which need to be protected during the destruction of their habitat and ecosystem.
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Which of the following is one of the biggest threats to biodiversity? A. Invasive species B. Land protection C. Ecological conservation D. Habitat restoration
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.
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
Chapter 38 Solutions
Campbell Biology: Concepts & Connections (9th Edition)
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- Converting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardWhich of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.arrow_forwardThe Burmese Python, an invasive species, has been introduced to the Florida Everglades, largely through release by owners who acquired the snakes from exotic pet traders. Though the Everglades are protected, pythons as predators can not be easily controlled. What can be concluded about the effect of the python population on the biodiversity of the Everglades? A. Since the Everglades are protected, python control is limited under laws that protect species in the Everglades. B. Since the python population is growing, it will eventually become a native species and will increase biodiversity. C. Since pythons prey on many species in the Everglades, resources will be more available for surviving species and fewer will be considered endangered. D. Since pythons have no predators, they are responsible for decreasing mammal population and are a greater threat to biodiversity.arrow_forward
- Which activity would be most likely categorized as restoration ecology? a. Counting the number of fish species in a lake b. Determining the effects of traffic noise on singing robins c. Removing pollutants from the Hudson River d. Modeling the effects of climate change on the distribution of a plant e. Surveying genetic variation in a population of an endangered salamanderarrow_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_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
- Describe what happens to an ecosystem when a keystone species is removed.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_forwardA keystone species is one whose removal from a community causes extinction of other species. How does this extinction happen?arrow_forward
- If you are studying the changes in the panda population in Asia you are most likely considered a…. a. Population ecologist b. Ecosystem ecologist c. Global Ecologist d. Community ecologistarrow_forwardWhy do moderate levels of disturbance result in an increase in community diversity?a) The resulting uniform habitat supports stability, which in turn supports diversity.b) Less-competitive species evolve strategies to compete with dominant species.c) Habitats are opened up for less competitive speciesd) Competively dominant species infrequently exclude less competitive species after a moderate disturbance.arrow_forwardKeystone species: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Are particularly important for the survival of other species in the community b Include wood storks c Include racoons d All of the above e A and Carrow_forward
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