Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 38, Problem 9RQ
Herbivory is beneficial for the animal (+) but harmful to the plant it eats (−). What are some+ − interactions among animal populations? What is the difference between commensalism and mutualism?
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Chapter 38 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 38 - The term ecology is derived from the Greek meaning...Ch. 38 - Prob. 2RQCh. 38 - Prob. 3RQCh. 38 - Define the niche concept. How does the realized...Ch. 38 - Populations of independently living (unitary)...Ch. 38 - Prob. 6RQCh. 38 - Contrast exponential and logistic (= sigmoid)...Ch. 38 - Growth of a population can be hindered by either...Ch. 38 - Herbivory is beneficial for the animal (+) but...Ch. 38 - Prob. 10RQ
Ch. 38 - Define predation. How does the predator-prey...Ch. 38 - Prob. 12RQCh. 38 - Prob. 13RQCh. 38 - What is a trophic level, and how does it relate to...Ch. 38 - Define productivity as the word is used in...Ch. 38 - Prob. 16RQCh. 38 - What conditions produce an inverted pyramid of...Ch. 38 - Prob. 18RQCh. 38 - Prob. 19RQCh. 38 - What do paleontological studies show about the...Ch. 38 - Prob. 1FFT
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- During the drought of 1977 on the island of Daphne Major, which of the following answers correctly explains why birds with larger beaks had a competitive advantage over other individuals? These birds were able to hold more water. These birds were able to fight off birds with smaller beaks more successfully. These birds were able to smell and locate nesting sites with more accuracy. Birds with larger beaks were better able to utilize the large seeds.arrow_forwardWhy are there so few lions compared to wildebeest in africa? Explain this in terms of ecological efficiency and energetic hypothesisarrow_forwardWhat is predator management? What is the linkage between the evolution of prey and predator species and how this relates to the regulation of population size? please answer botharrow_forward
- The lotka-volterra equation that describes rate of change in the predator population doesn't include intrisic rate for predators. How does it accomodate for growth in predators if the rate is missing?arrow_forwardDraw on one graph, with N2 on the y-axis and N1 on the x-axis, the isoclines for the twocompetitors with the carrying capacities and competition coefficients listed below. Will thesespecies coexist? If not, which species will win? Competitor 1 Competitor 2 K1 = 200, α12 = 0.4 K2 = 400, α21 =1arrow_forwardCapturing and relocating is stressful for animals. In the zebra example, what are the stages of reintroduction, and what purpose does each step serve? Why is the buffalo considered a success story for reintroduction? (And -- based on what you know from lecture, what type of population growth pattern does this indicate?) Park managers use the term “adaptive management”; what do you think this means, and what are two benefits of this approach to managing ecosystems?arrow_forward
- Do the above hypothesis support the graph? Explain Foraging in a mixed-species flock scenario, the assumption is that the establishment of mixed-species flocks will enhance feeding productivity.arrow_forwardA negative feeback loop would be: Preditors and prey keeping each other’s populations in check so there is no overpopulation. Preditors out competeing prey. Prey outcompeting preditors. Both preditors and prey being outcompeted by another organism.arrow_forwardWhat is a benefit of uniform dispersion? decreased competition increased resources easier reproduction increased competitionarrow_forward
- In some circumstances, grasses that initially lose tissues from being consumed by animals such as elk or cattle regrow more than they would have otherwise, and benefit from the moderate levels of grazing. Which of the following terms would best describe such a plant-herbivore interaction?a) Commensalismb) Mutualismc) Predationd) Parasitismarrow_forwardWhy have frequent small controlled-burn wildfires not helped to maintain chaparral ecosystems? 2 of 302 of 30 Questions Listen Question Why have frequent small controlled-burn wildfires not helped to maintain chaparral ecosystems? Seeds of chaparral shrubs need a large accumulation of leaf litter in order to sprout. The heat from forest fires destroys the roots of chaparral plants. Fire destroys the seeds of many types of chaparral shrubs. Burnt ground encourages the growth of grasses, which compete with shrubs for nutrients.arrow_forwardHyena carrying capacity in Mkomazi National Park is 500 (in the absence of competitors). Wild Dog carrying capacity in that park is 700 (in the absence of competitors). The addition of 1 wild dog to the park is equivalent to adding 2.5 hyena. The addition of 1 hyena to the park is equivalent to adding 0.4 wild dogs. Which of these species is the better competitor? Justify your answer quantitatively and illustrate your argument using an appropriate graph.arrow_forward
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