Which of the following examples describe an adaptive trait? (Select all that apply.) (a) A rainforest tree that is vulnerable to storm damage. (b) A male bird that is more successful than others at attracting a female mate. (c) A rabbit that is better camouﬂaged in its environment. (d) A desert plant that is able to survive drought. (e) A frog that is more noticeable to predators.

Which of the following examples describe an adaptive trait? (Select all that apply.) (a) A rainforest tree that is vulnerable to storm damage. (b) A male bird that is more successful than others at attracting a female mate. (c) A rabbit that is better camouﬂaged in its environment. (d) A desert plant that is able to survive drought. (e) A frog that is more noticeable to predators.

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 15CTQ: If a person scatters a handful of plant seeds from one species in an area, how would natural...

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Which of the following best explains the connection between increased competition and the evolution of a species by natural selection? Individuals migrate to another area in order to avoid competition for limited resources in the current ecosystem. Individuals that have traits that allow them to outcompete others survive better and produce more offspring. Individuals must become stronger to compete for resources, and this increased strength is passed on to the next generation. Individuals that must compete for limited resources are more likely to have diseases that cause mutations.
Evolutionary biologists often say that evolution “selects for outcomes” not for the particular genetic changes that lead to that adaptive outcome. Given that perspective, is it surprising that different gene mutations might be involved in the evolution of the same trait (such as light skin or adaptation to living in high mountains)? Why or why not?
Why might natural selection act more strongly on traits that improve reproductive success early in life rather than later in life?
Compare and contrast the five patterns of natural selection that drive adaptation.
In several pairs of plant and animal species, plants have become modified such that only its animal partner can pollinate it, and the animals have become modified such that they are especially well adapted to pollinate just their plant partner. What is the name of this type of evolution that results in two organisms becoming particularly adapted to and dependent on each other?
Is this evolutionary conservation of the pecten structure evidence that natural selection might be maintaining the pecten in its present form in many bird species? Is this theory one that suggests the pecten has a significant adaptive function in birds? Do you believe that experiments might be useful in determining the adaptive function of the pecten if it indeed serves an adaptive function? Outline a simple experiment to see whether the presence of a pecten in the bird's eye is an adaptation.
What is Natural Selection? (Use the follow-up questions below to construct your answer) How did different environments 'select' for certain beaks? What will happen to the birds that are no longer well suited to eat the type of food the island provides?
What result in adaptation comes from natural selection?
How does competition influence natural selection? Is the presence of competitors a selective force?
What effect does the level at which natural selection operates (genes, individuals, or groups) have on human free will?
How can behaviors be adaptive? Provide an example that includes support from the five tenants of evolution by natural selection: 1) overproduction of offspring, 2) variation in the population, 3) competition for resources, 4) adaptive advantage for some, and 5) reproduction for those who survive
Do you believe that because insect beak length has changed in opposite directions in the Florida and the Texas populations that we have stronger evidence that natural selection was acting directly on beak length in these populations? Or is it equally likely that natural selection is only acting on a trait correlated with beak length in the Florida and Texas populations?