Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 56, Problem 1TYK
Summary Introduction
Introduction: Biodiversity or biological diversity is a term that is used to describe the variation among the living organisms and it includes all life forms present on the earth. The three levels of biodiversity are genetic, species, and ecosystem diversity.
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A species that has an immediate threat to extinction is said to be:a. threatened. c. alien.b. endangered. d. extinct.
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
Provide 2 Philippine animal and 2 plant species whose status is threatened or endangered. Why are these plants and animals are considered threatened/endangered?
Chapter 56 Solutions
Study Guide for Campbell Biology
Ch. 56 - Prob. 1IQCh. 56 - Is the effective population size larger or smaller...Ch. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - What are some potential benefits of corridors? How...Ch. 56 - What factors would favor the creation of larger,...Ch. 56 - List some of the ways by which we may slow global...Ch. 56 - Describe the four major threats to biodiversity.Ch. 56 - Prob. 2SYKCh. 56 - Prob. 3SYK
Ch. 56 - Prob. 1TYKCh. 56 - Ecosystem services include all of the following,...Ch. 56 - The most serious threat to biodiversity is a....Ch. 56 - Prob. 4TYKCh. 56 - Prob. 5TYKCh. 56 - Prob. 6TYKCh. 56 - The smallest population that can sustain its...Ch. 56 - Movement corridors are a. strips or clumps of...Ch. 56 - Prob. 9TYKCh. 56 - Prob. 10TYKCh. 56 - Prob. 11TYKCh. 56 - Prob. 12TYKCh. 56 - Thinning of the ozone layer is a result of CFCs...Ch. 56 - Sustainable development a. uses nature reserves to...Ch. 56 - Which of the following statements reflects a...
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- A conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one? A. Humans are dependent on many species for food, medicines, fiber, and other necessities. B. Biodiversity can be exploited indefinitely for the profit of humans. C. Other species have inherent value and humans have a moral obligation to protect them. D. Biodiverse ecosystems provide ecosystem services that sustain all life on Earth. E. Biodiversity provides emotional and physical health benefits by providing places for humans to visit for wonder, insight, and exercise.arrow_forwardIf the statement pertains to a threatened species, put an x in the threatened column. If the statement pertains to an endangered species, put an x in the endangered column. If neither column applies, leave the line blankarrow_forwardWhich of the subsequent options is not included in the red list criteria for species classified as "critically endangered"? 1. The population is projected to decrease by 25% or more within a span of 3 years or 1 generation. 2. The species possesses a limited range of less than 100km2 in a solitary location, and there is evidence of or anticipated habitat loss, fragmentation, ecological imbalance, or significant commercial pollution. 3. The likelihood of extinction exceeds 50% within a timeframe of 10 years or 3 generations. 4. The overall population size consists of fewer than 200 mature individuals.arrow_forward
- Which of the following is one of the biggest threats to biodiversity? A. Invasive species B. Land protection C. Ecological conservation D. Habitat restorationarrow_forward42. Which of the following would not be illegal under the Endangered Species Act? A. Having a permit to capture an endangered species for.research B. Digging up an endangered plant in your backyard and selling it C. Destroying the habitat of an endangered plant during the building of a federal highway D. Capturing a wild animal listed as a threatened species for exhibition in a zoo, provided the animal was well cared. 43. Which of the following would not be illegal under the Endangered Species Act? A. Having a permit to capture an endangered species for research B. Digging up an endangered plant in your backyard and selling it C. Destroying the habitat of an endangered plant during the building of a federal highway D. Capturing a wild animal listed as a threatened species for exhibition in a zoo, provided the animal was well cared. 44. Which situation illustrates the relationship between a limiting factor and population density? A. When birth rate is greater than death rate, population…arrow_forwardHow can a commensalism become a mutualism? a. A commensalism cannot become a mutualism. b. An interaction that was once harmful to one species becomes beneficial to both species. c. An interaction that was once harmful to both species becomes beneficial to one species. d. An interaction that was once beneficial to both species becomes beneficial to only one species. e. An interaction that was once beneficial to one species becomes beneficial to both species.arrow_forward
- A biologist determines the growth rate of a population of 198 frogs in a marsh near Beaverhill Lake, Alberta, to evaluate the quality of the environment. The researcher finds that, in one year, 34 were born, 86 died, 12 migrated into the marsh, and there was no emigration. a. frogs are considered an indicator species for the quality of the environment. Determine whether the growth rate of this population in one year is a cause for concern. if so, what might the concerns be?arrow_forwardExotic or non-indigenous species are species that have been transported to new locations by humans, either intentionally (e.g., the ornamental trade, fisheries or aquaculture) or unintentionally (e.g., accidental release of aquarium or pet species), and have established one or more populations in their new location. Exotic species may become invasive species if they expand their range in their novel region and become abundant. The presence of invasive species is of concern because invasive species can have negative effects on the affected ecosystems or commercial interest. Research an invasive species and include the following: Scientific name and common name (if the species has one) The species native region and invaded region Consequences or concerns that the species presents. Potential solutions Include referencesarrow_forwardAccording to the Enemy Release Hypothesis: a. Predators and pathogens experience population increase when invasive species become extinct b. Invasive species allow other species in the habitat to escape their normal enemies c. Predators and pathogens have significantly greater ability to invade other habitats than any other organisms d. Invasive species perform well in foreign habitats as they because not face their normal enemies e. Invasive species replace the native enemies of resident speciesarrow_forward
- Habitats with moderate levels of disturbance have higher species diversity. A) True B) Falsearrow_forwardWhich of the following statements about natural disasters is false? a. The effects can be mitigated through regulation and policies b. Includes earthquakes, hurricanes, and wildfires c. Require public health preparedness d. They cannot be predictedarrow_forwardC. Destruction of the Yellowstone ecosystem D. Reduction in the coyote population, increasing the raptor population 37. Which of the following are things you can do to help preserve biodiversity? A. Volunteer with citizen science or other organizations like it B. Buy park passes and visit the parks respectfully C. Live more sustainably by making eco-friendly consumer choices D. All of the abovearrow_forward
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