Natural selection occurs when which of the following conditions are met? Individual organisms depend on each other to obtain available resources • Variations between individual organisms lead to differential survival chances Habitat and nutrient resources in an area are plentiful over a long period of time The conditions in an ecosystem support a wide range of living organisms

Natural selection occurs when which of the following conditions are met? Individual organisms depend on each other to obtain available resources • Variations between individual organisms lead to differential survival chances Habitat and nutrient resources in an area are plentiful over a long period of time The conditions in an ecosystem support a wide range of living organisms

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 17CTQ: Describe natural selection and give an example of natural selection at work in a population.

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Adaptation is an important component for species survival. Genes get selected for based on pressures. It is now known that several species (bacteria, plants, and animals) adaptions potentially reflect a response to human actions. Which of the following represent examples of how species are adapting to human behaviors? Choose all that apply. O Dandelions getting longer in areas that are constantly mowed O Bacteria exhibiting antibiotic resistance O The peppered moth expressing dark coloration genes during the industrial revolution O Cholera bacteria becoming more mild when water sources are cleaner
The way an individual's energy is divided among growth, maintenance, and reproduction is controlled by the species' genes and is shaped by natural selection. Different species divide their energy in different ways, but the way energy is divided results in the greatest given the species' niche. O body size o individual survival o lifetime reproductive success
Imagine walking through a tropical rainforest. You notice that there are different types of trees, birds, insects, and other organisms. A few weeks later you are taking a walk through the desert and notice that the trees, birds, insects, and other organisms are different than those you saw in the rainforest. Which of the following statements best explains the differences between each of these ecological systems? Organisms in each ecological system are there by chance and their presence in different ecological systems does not have a biological explanation. Organisms in each ecological system have short dispersal distances and are confined to populations in the area where they mate. Organisms in each ecological system have not had enough time to evolve the adaptations for the other ecosystem; with enough time they will evolve into the other ecological system. Organisms in each ecological system have not had enough time to evolve the adaptations for the other ecosystem; but exhibit…
Population size Lower limit of tolerance Higher limit of tolerance No Few Few organisrms No organisms organisms Abundance of organisms organisms Zone of intolerance physiological stress Optimum range Zone of physiological intolerance stress Zone of Zone of Low Temperature High In this aquatic ecosystem, identify three other factors besides temperature that could be depicted on the x-axis of this graph. a. b. Consider one of the factors you listed above. Would the exact same individual fish be found in the zone of tolerance for temperature as they would for the factor you identified? Why or why not?
Which of the following descriptions about the organization of an ecosystem is correct? O Individuals of the same species are grouped in populations, which make up communities. O Individuals of the same species make up communities, which make up populations. Populations make up species, which make up communities. Communities make up species, which make up populations.
Which of the following is an example of biological magnification? O Increasing concentrations of chemicals are present in organisms at higher trophic levels. Explosive expansion of species following an ecological disturbance increase diversity. O Diversification of species depends on the size and continuity of their regional habitat. Members of a species increase in size over time because the largest organisms are more fit. Larger organisms utilize more abiotic resources than smaller organisms.
C5 x P Parchment Exchange - Leader earn.edgenuity.com/player/ ence- SC5181 A G 5 Mark this and return G how would scientists describe th Why is random distribution of species the least common pattern? O It eliminates the protection benefits provided by a large group. O It decreases competition among members of the population. O It reduces the amount of light that producers can get from the sun. OIt does not mirror how resources are distributed in nature. X O Σ how is point intercept used to de x + Save and Exit Next 0 < English Sign out v ☆ E. 0 Kinley He Submit Oct 27 2:08
Bats and birds eating insects at different times of day is an example of competitive exclusion resource partitioning natural selection survival of the fittest
Read this quote from Charles Darwin (from Origin of Species). What is he describing? "Thus, I can understand how a flower and a bee might slowly become, either simultaneously or one after the other, modified and adapted to each other in the most perfect manner, by the continued preservation of all the individuals which presented slight deviations of structure mutually favorable to one another." An interaction network. A predator/prey cycle. O Coevolution. An obligate mutualism.
The principle that species cannot occupy the same niche forever, one will eventually exclude the other is known as: O Zone of differentiation O Differential exclusion O Competition mediated exclusion O Character displacement O Competitive exclusion
Which of the following statements is consistent with the principle of competitive exclusion? Bird species generally do not compete for nesting sites Two species with the same fundamental niche will likely exclude all other species Natural selection tends to increase competition between closely related species When two species are in direct competition for the same resource, one species will eventually prevail
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