EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
Publisher: PEARSON
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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.
Why B is wrong?
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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