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EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
Publisher: PEARSON
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Question
Chapter 27.2, Problem 2CC
Summary Introduction
To determine:
In what way the ongoing evolutionary changes in prey and predator population will be affected, if a well-defended prey species arise that is difficult for the predators to catch or eat.
Concept introduction:
The struggle between prey and predators always keep on going. The prey evolves some features that allow them to escape predators and increase in number. The predators in turn also develop some features to counter the escape mechanism of prey. The prey and predator interaction in this way lead to their co-evolution.
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Students have asked these similar questions
Think about a predator-prey system that perfectly follows Lotka-Volterra dynamics.
The search efficiency parameter (a) represents how quickly the predator finds and
kills its prey. What would happen if most the predator population had a parasite that
made them less effective predators? Infected animals find and kill prey less
frequently (that is, the parasite caused the value of the search efficiency parameter
to decline).
the populations would still cycle; the amplitude of prey and predator would
increase
Othe populations would no longer cycle; the prey would increase and the predator
would go extinct
the populations would no longer cycle; the prey would go extinct and the
predator would increase
the populations would still cycle; the amplitude of prey and predator would
decline
the predator and prey populations would no longer cycle; the parasite and the
predator populations would cycle instead
With respect to the Lotka-Volterra predator-prey model, which of the following
statements is most likely true?
Under this model, it is possible for a predator to drive its prey to extinction.
All of the statements are true.
Non of the statements is true.
This model predicts neutrally-stable predator-prey cycles, as opposed to a
stable equilibrium.
O In this model, an increase in searching efficiency (a) will increase the maximum
prey population.
. Scientific study of the population cycles of the snowshoe hareand its predator, the lynx has revealed that(A) predation is the dominant factor affecting prey populationcycling.(B) hares and lynx are so mutually dependent that each speciescannot survive without the other.(C) both hare and lynx population sizes are affected mainly byabiotic factors.(D) the hare population is r-selected and the lynx populationis K-selected.
Chapter 27 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
Ch. 27.1 - Prob. 1CCCh. 27.1 - Prob. 2CCCh. 27.2 - What is the Cambrian explosion? Why is it...Ch. 27.2 - Prob. 2CCCh. 27.3 - Prob. 1CCCh. 27.3 - WHAT IF? Would it be accurate to describe the...Ch. 27.4 - Prob. 1CCCh. 27.4 - Describe two key adaptations of aquatic...Ch. 27.4 - MAKE CONNECTIONS The radiation of bilaterians in...Ch. 27.5 - Describe two adaptations that have enabled insects...
Ch. 27.5 - MAKE CONNECTIONS Compare and contrast how the...Ch. 27.6 - Describe three key amniote adaptations for life on...Ch. 27.6 - Prob. 2CCCh. 27.6 - WHAT IF? Which came first, the chicken or the egg?...Ch. 27.7 - Describe how ocean communities changed in the...Ch. 27.7 - Prob. 2CCCh. 27.7 - Prob. 3CCCh. 27 - Prob. 1TYUCh. 27 - Fossil steroid and molecular clock evidence...Ch. 27 - Which of the following was probably the least...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - FOCUS ON EVOLUTION In Figure 27.29, circle the...Ch. 27 - FOCUS ON ORGANIZATION Early tetrapods had a...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Collectively, do these...
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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
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- Thinking about the Lotka-Volterra predator-prey model, what effect should an increase in searching efficiency (a) have on the maximum prey population? Increase Decreasė No change < Previnus V Finisharrow_forward三| m 13 TABLE 14.2 Generation: 2. 11 12 14 15 3. 9 Initial Prey loo lo044 이 814 22 Total Prey Captured 2. 1|9れ|8t|8E Initial Predators 654 (1 20 4 2. Surviving Predators 3 2 to 33 Predator Offspring 12 Data Analysis: Graph your results. and initial 1 Independently (not with your group), use the data in Table 14.2 to enter the initial predators into two columns in a spreadsheet (e.g., Excel or Google Sheets). prey 2 Select these two columns, and Insert a line graph. 3 In Chart Layouts, select Layout 1 and enter a chart title and the y-axis title (Abundance). 4 In Layout, select Axis Titles, Primary Horizontal Axis Title, Title Below Axis, and enter the x-axis title (Generation). 5 Select the y-axis numbers, Format, Format Selection; click Logarithmic scale, “Cross" for major tick mark type, and “Cross" for minor tick mark type. 6 Save to the desktop and e-mail the file to yourself. Print your graph and turn it in with this lab. DO YOUR OWN WORK! NO PHOTOCOPIES! Or your instructor may…arrow_forwardWhat would you conclude after comparing the survivorship of the ground squirrel and the finch? Multiple Choice Both have very large numbers of offspring. Both die primarily of old age. Both suffer high predation throughout the lifespan. They represent different survivorship types.arrow_forward
- After completing the GVL OER module - Population Dynamics, explain the relationship between predator and prey. Identify the patterns that exist in the dynamic relationships between predator and prey. Relate your discussion to the overall health of their populations and ultimately the ecosystem. How does each organism benefit from the other? In what ways do other populations in the ecosystem benefit?arrow_forwardFitness and Selection: Rodent tails A researcher is studying a rodent species with a lot of variability in tail length. Individuals may have short tails, medium tails, or long tails. The researcher has noticed that a new invasive predator, which catches prey by their tails as they try to escape, seems to catch individuals with long tails more often than those with short tails. Based on a small field trial, the relative fitness of long-tailed individuals seems to be 0.6 compared to short-tailed ones (1.0), with medium tails in-between (0.8). Use the Examples tab to predict the outcome after selection for the rodent in regions with the invasive predator. What describes the population after 100 generations of selection? Choose all that apply. A-Short Tailed individuals are the most common phenotype. B-Short Tailed individuals are the only phenotype. C-This is an example of disruptive selection. D- The long tailed phenotype is no longer present E-This is an example of directional…arrow_forward3c: How could the total road kills go down, as the nests are going up? (Nests are something scientists use to estimate the size of adult swallows surviving long enough to reproduce.) 3d: What about the environment contributes to a change in the average wing length in the cliff swallow population over generations? 3e: What is the role of natural selection in explaining the change in average wing length in the population over generations?arrow_forward
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