Adaptive radiations can be a direct consequence of three of the following four factors. Select the factor that is NOT a direct consequence of adaptive radiation. Select one: a. Genetic drift b. Vacant ecological niches (niches are environment "space" where a particular organism has resources required to survive and reproduce) c. New evolutionary innovations d. Colonization of a new region that contains suitable habitat and few competitor species

Adaptive radiations can be a direct consequence of three of the following four factors. Select the factor that is NOT a direct consequence of adaptive radiation. Select one: a. Genetic drift b. Vacant ecological niches (niches are environment "space" where a particular organism has resources required to survive and reproduce) c. New evolutionary innovations d. Colonization of a new region that contains suitable habitat and few competitor species

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 4RQ: What is the difference between micro- and macroevolution? a. Microevolution describes the evolution...

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Adaptive radiation is common following a period of mass extinction, probably because (a) the survivors of a mass extinction are remarkably well adapted to their environment (b) the unchanging environment following a mass extinction drives the evolutionary process (c) many adaptive zones are empty(d) many ecological niches are filled (e) the environment induces changes in the timing of development for many species
What is the difference between micro- and macroevolution? a. Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants. b. Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms. c. Microevolution describes the evolution of populations, while macroevolution describes the emergence of new species over long periods of time. d. Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.
Adaptive radiations can be a direct consequence of three of thefollowing four factors. Select the exception.(A) vacant ecological niches(B) genetic drift(C) colonization of an isolated region that contains suitablehabitat and few competitor species(D) evolutionary innovation
Adaptive radiation a. is the result of enriched uranium used in power plants. b. is the evolution of closely related species adapted to use different parts of the environment. c. results from genetic drift. d. is the outcome of stabilizing selection favoring the maintenance of adaptive traits.
The three beetle species live in the same ecosystem, and they likely evolved from the ancestral species that colonized the region. Which statement best explains how descent with modification influenced speciation in these beetles? A. The ancestral species carried neutral gene mutations that spontaneously caused speciation when they colonized the region. B. The ancestral species randomly diverged into three species before colonization and then colonized the regions that best suited their new adaptations. C. After colonization, small groups separated from the rest of the ancestral species and developed different adaptations that helped them survive and reproduce. D. After colonization, the large group interbred until they developed enough neutral genetic mutations for speciation to occur.
Which of the following terms most speciﬁcally describes what occurs when a group of organisms expands to take on new ecological roles, forming new species and higher taxonomic groups in the process? (a) speciation (b) mass extinction (c) evolution (d) adaptive radiation
Because mass extinction is a natural process that may facilitate evolution during the period of thousands to millions of years that follow it, should humans be concerned about the current mass extinction we are causing? Why or why not?
Which of the below best explains why the 14 finch species of the Galapagos Islands are a good example of adaptive radiation? Group of answer choices The 14 finch species originated from 14 different ancestral species that all arrived to the Galapagos over a relatively short time period. The 14 finch species originated over a relatively short time period from a single species. The 14 finch species most likely originated as a result of polyploidy. The 14 finch species on the Galapagos Islands are actually not a good example of adaptive radiation. The 14 finch species evolved their characteristics separately as a result of convergent evolution.
The Galapagos archipelago consists of volcanic islands that formed within the last 5 million years. Darwin wrote of the finches on these islands, "...from an original paucity of birds in this archipelago, one species has been taken and modified for different ends." The Galapagos finches are an example of adaptive radiation driven by a. behavioural innovation. b. morphological innovation. c. ecological opportunity. d. physiological innovation.
The evolution of one species into two or more species as a result of different populations becoming reproductively isolated from each other is best termed as adaptive radiation. True or False.
If a sixth extinction event is occurring, how is it similar or different from the previous five mass extinctions? What sort of evidence do you think scientists look for to determine whether we are living through a mass extinction?
Which of the following is likely a reason why evolutionary radiation would occur on islands? A) there are many more species on islands B) islands tend to have more favourable habitats than continents because they are moderated by the ocean C) islands may have fewer animal and plant groups and thus provide more ecological opportunities D) organisms can disperse easily across oceans E) islands often have more diverse habitats than continents