Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 17.4, Problem 2CYL
Summary Introduction
To describe:
Some examples of living species that are at risk of extinction.
Introduction:
The endangered species are those species whose numbers are getting low. To prevent the extinction of those species, the Endangered Species Act formed.
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Chapter 17 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 17.1 - The tiny frog paedophryne amauensis was discovered...Ch. 17.1 - describe how biologists define species and explain...Ch. 17.1 - One way to determine the number of species on...Ch. 17.1 - Prob. 1TCCh. 17.1 - describe the biological species concept and...Ch. 17.1 - list some reasons why it can be hard to tell...Ch. 17.2 - describe the main types of premating and...Ch. 17.2 - provide examples of each type of mechanism?Ch. 17.3 - It is not surprising that the forests of New...Ch. 17.3 - describe the two general steps that are required...
Ch. 17.3 - Make a list of events or processes that could...Ch. 17.3 - One possible explanation for the distinctive...Ch. 17.3 - explain the difference between allopatric and...Ch. 17.3 - How might conservation scientists use the map...Ch. 17.3 - explain adaptive radiation and describe the...Ch. 17.3 - Prob. 3TCCh. 17.3 - interpret an evolutionary tree diagram?Ch. 17.3 - Prob. 4TCCh. 17.4 - Prob. 1CTCh. 17.4 - describe the main causes of extinction?Ch. 17.4 - If specialization puts a species at risk for...Ch. 17.4 - Prob. 2CYLCh. 17.4 - Given that genetic isolation is the first step in...Ch. 17 - It is difficult to perform experiments that test...Ch. 17 - A species is a group of ________ that evolves...Ch. 17 - The biological species concept is difficult or...Ch. 17 - Define the following terms: species, speciation,...Ch. 17 - Fill in the following with the appropriate...Ch. 17 - Which of the following does not describe a...Ch. 17 - Many of the oak tree species in central and...Ch. 17 - Formation of a new species occurs when two...Ch. 17 - All instances of speciation require a. genetic...Ch. 17 - Review the material on the possibility of...Ch. 17 - The process by which many new species arise in a...Ch. 17 - Analysis of Rhagoletis fly populations in North...Ch. 17 - A drug called colchicine prevents cell division...Ch. 17 - A species may be at higher risk of extinction if...Ch. 17 - In the initial phase of allopatric speciation,...Ch. 17 - What are the two major types of reproductive...
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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
- Identify a species that your group thinks is ok to drive to extinction and justify the reasons for this decision. Can you anticipate any consequences of losing this species from the Earth?arrow_forwardDo you think generalist or specialized species would be better able to adapt and avoid extinction if the environment changed rapidly, for example, as a result of forced climate change? Why?arrow_forwardWhat limits species’ ranges?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_forwardDefine and distinguish among native, nonnative, indicator, and keystone species and give an example of each. What is an invasive species?List six factors that threaten many species of frogsand other amphibians with extinction. Describe therole of the American alligator as a keystone species.Explain why ecologists say we should protect sharks.arrow_forwardIn what ways do you think species matter and it is important to protect species from extinction, or keep them flourishing? Is there something about species or biodiversity that makes it inherently to-be-valued?arrow_forward
- give two examples of an ecological specialist that went extinct. It may be useful to look for coextinction events, in which extinction of one species led to extinction of an ecological specialist that depended on that speciesarrow_forwardEcologists use a rank-abundance curve to display relative species abundance, which is a component of biodiversity. It can also be used to demonstrate species richness and evenness. Figure 1 shows the rank- abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Pollution of streams, on the other hand, reduces the diversity of Trichoptera and several other groups of stream insects, reducing both species richness and species diversity. Interpret why those happened. These rank-abundance curves show that the mountain stream caddisfly community has higher species richness and greater species evenness. 0.1 - Mountain stream 0.01 Greater richness and species evenness 0,001 Coastal ponds 0.0001 20 40 60 80 Abundance rank Figure 1: Rank-abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Proportional abundancearrow_forwardIn the past, which factor would have caused a mass extinction of species?arrow_forward
- Some people declare that we shouldn’t worry about endangered species because extinction has always occurred. How would you respond to this view?arrow_forwardDo you expect that natural selection acting within a species would increase the population size of the species? Do you expect that it would increase the rate at which new species arise, thus increasing the number of species?arrow_forwardWhy are species with low body size and low population size probably rare?arrow_forward
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