Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 47, Problem 1TY
Summary Introduction
Introduction:
Biological diversity, biodiversity, is the variations in different species and the ecosystems in which these species survive. Biodiversity is studied in three stages, species diversity, genetic diversity, and ecosystem diversity.
Expert Solution & Answer
Answer to Problem 1TY
Option (d), a species that is in danger of becoming extinct throughout all or a significant portion of its range.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d), a species that is in danger of becoming extinct throughout all or a significant portion of its range. Endangered species are those species that are on the verge of extinction throughout the world. Hence, this option is correct.
Explanation/justification for the incorrect answer:
Option (a), a species that is likely to become extinct in a portion of its range. Endangered species are not the ones whose population is decreasing in the given range but in the whole world. Hence, this option is incorrect.
Option (b), a species that has disappeared in a particular community but is present in other natural environments. Endangered species are not the ones whose population is decreasing in the given range but in the whole world. Hence, this option is incorrect.
Option (c), a species that is extinct. Extinct species are those species whose even one organism is not present on this planet to continue life. While endangered species are those with a limited population. Hence, this option is incorrect.
Option (e) is both b and d. Among the given options, option d is correct. Hence, this option is incorrect.
Conclusion
Among the answers given, a correct answer is an option (d), a species that is in danger of becoming extinct throughout all or a significant portion of its range.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Which one of the following statements is FALSE?
Beta diversity is low when two ecosystems share the similar species and respective abundance.
An intelligent meander records date, time, location and a list of species.
Beta diversity or differentiation diversity compares alpha diversity among several communities.
Species richness is the total species abundance in an ecosystem.
Inventory diversity can be defined by alpha diversity, which is the number of species in a local forest stand.
Which of the following is not a part of the red list criteria for "critically endangered" species?
The population is expected to decline by 25% or more within 3 years or 1 generation.
The species has a restricted range <100km2 at a single location and there is observed or predictive habitat loss, fragmentation, ecological imbalance or heavy commercial pollution.
Extinction probably is greater than 50% within 10 years or 3 generations.
The total population size is less than 200 mature individuals.
How does extirpation differ from extinction?
Group of answer choices
Extinction and extirpation are the same thing.
Extirpation is the loss of a single population, while extinction is the loss of an entire species.
Extinction only happens during a mass extinction.
Extinction is the loss of a single population, while extirpation is the loss of an entire species.
Chapter 47 Solutions
Principles of Biology
Ch. 47.1 - In 1977, Rafael Guzman, a Mexican biologist,...Ch. 47.2 - Prob. 1TYKCh. 47.2 - Prob. 2TYKCh. 47.3 - Prob. 1CCCh. 47.3 - Prob. 2CCCh. 47.3 - Prob. 1BCCh. 47.3 - Prob. 1TYKCh. 47.3 - Prob. 2TYKCh. 47.3 - Prob. 3TYKCh. 47 - Prob. 1TY
Ch. 47 - Prob. 2TYCh. 47 - The idea that humans have an intimate love of...Ch. 47 - Prob. 4TYCh. 47 - Prob. 5TYCh. 47 - Prob. 6TYCh. 47 - Prob. 7TYCh. 47 - Prob. 8TYCh. 47 - Prob. 9TYCh. 47 - The American buffalo, Bison bison, is considered a...Ch. 47 - Prob. 1CCQCh. 47 - Prob. 2CCQCh. 47 - Prob. 3CCQCh. 47 - Prob. 1CBQCh. 47 - Prob. 2CBQ
Knowledge Booster
Learn more about
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
- Population _______________ is the number of individuals of a species per unit of habitat area or volume at a given time. (a) dispersion (b) density (c) survivorship (d) age structure (e) demographicsarrow_forwardThe green world hypothesis was tested by Robert Paine and he found that when you removed the top predator, star fish, from the intertidal zone Group of answer choices: • None of the answers are correct • species diversity stayed the same • species diversity increased • species diversity decreasedarrow_forwardWhich of the following can be considered a level of biodiversity organization? genetic variation within species all of the options are correct assortment of communities at the landscape level number of species in a community genetic variation within populations Which of the following birds puts its eggs into other birds nests? hooded warbler none of the options are correct woodpecker robin cowbirdarrow_forward
- Which 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_forwardWhich of the following attributes of a community would tend to lead to higher species richness? High specialization of species A broad resource spectrum High population size in each species Both a and b Both b and carrow_forwardWhich community would be expected to have the highest species richness? Group of answer choices A community that inhabits a small geographic area near the poles. A community that inhabits a small geographic area near the equator. A community that inhabits a large geographic area area near the poles. A community that inhabits a large geographic area near the equator.arrow_forward
- What is the relationship between extinction, its impact on biodiversity, and ecosystems? When a species becomes extinct, the vacancy of that species allows another species to invade and transform the ecosystem so there is no longer biodiversity, which allows the ecosystem to flourish. The extinction of plants and animals leaves a vacancy in the biodiversity of the ecosystem, which can cause the ecosystem to collapse. The extinct plants and animals can come back as a different species, creating more biodiversity within the ecosystem. The extinction of plants and animals does not have an impact on the biodiversity of an ecosystem.arrow_forwardBob Davison describes the Endangered Species Act (ESA) as an effective tool for conserving biological diversity. What is his rationale for the value of focusing on individual species? The public is not concerned about the economic costs of individual species recovery. A focus on individual species is cheaper than protecting entire ecosystems. Establishing public empathy for charismatic species provides an opportunity to educate people about lesser-known species. The public tends to value intact ecosystems over particular plant and animal species.arrow_forwardSpecies richness refers to Group of answer choices a. number of species in a community b. how even in abundance the species in a community are c. extinction rate of species d. number of trophic interactions in a food web e. number of species plus evenness of numbers of individualsarrow_forward
- Which of the following statements about a mutualism are true? Each species is trying to increase the fitness of the other species Both species benefit from the interaction One species benefits and the other species may or may not benefit Mutualisms are rare Group of answer choices a. 2 only b. 3 only c. 2 and 4 d. 1 and 3arrow_forward_____ is a term describing species that are in danger of becoming endangered. a. extinct b. extirpated c. endangered d. threatenedarrow_forwardA predators can feed on several prey species, but prefer to attack those with the weakest defenses. The same predator may shift to a different prey species that becomes more common or more easily overcome when the previousiy preferred prey had acquired better defenses against the predator. This shifting strategy, known as _____________, results in sequential or alternating bouts of pairwise coevolution between many different species. A. resource shifting B. coevolutionary alternation C. ecological character displacement D. cospeciationarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning