Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 54, Problem 10TYK
Ecologists survey the tree species in two forest plots. Plot 1 has six different species, and 95% of all trees belong to just one species. Plot 2 has five different species, each of which is represented by approximately 20% of the trees. Compared with plot 1, plot 2 has
- a. higher species richness.
- b. greater species diversity.
- c. lower species richness.
- d. Both b and c are correct.
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Students have asked these similar questions
Which of the following relationships explains the high diversity of species in tropical forests?
Group of answer choices
a. burning forests return CO2 to the atmosphere
b. populations grow rapidly when N is small
c. tropical forests occur near the equator
d. high energy input allows for a large number of trophic levels
e. keystone species control species diversity
Using what was talked about in class, which of the following would most indicate an ecosystem that is the most resilient to change?
(a) Many species with a lot of connections
(b) Few species with few connections
(c) None of these
(d) Many species with few connections
Which activity would be most likely categorized as restoration ecology?
a.
Counting the number of fish species in a lake
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Determining the effects of traffic noise on singing robins
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Removing pollutants from the Hudson River
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Modeling the effects of climate change on the distribution of a plant
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Surveying genetic variation in a population of an endangered salamander
Chapter 54 Solutions
Study Guide for Campbell Biology
Ch. 54 - When two spiny mouse species coexist, Acomys...Ch. 54 - Name the type of mimicry described in each of the...Ch. 54 - Name and give examples of the interspecific...Ch. 54 - Tide pool 1 has three species of sea urchins with...Ch. 54 - Prob. 5IQCh. 54 - Describe the effects of the alder stage on soil...Ch. 54 - Why would the fact that tropical communities are...Ch. 54 - a. How do the rates of immigration and extinction...Ch. 54 - Why are ecologists trapping and testing migrating...Ch. 54 - Complete the following concept map to organize...
Ch. 54 - Community ecologists develop models or hypotheses...Ch. 54 - Two allopatric species of Galapagos finches have...Ch. 54 - The greater blue-ringed octopus (Hapalochlaena...Ch. 54 - Two other species of octopus (H. maculosa and H....Ch. 54 - Two species, A and B, occupy adjoining...Ch. 54 - Two shops in the same block are selling coffee and...Ch. 54 - A palatable (good-tasting) prey species may defend...Ch. 54 - Most humans are host to mites of the genus Demodex...Ch. 54 - The species richness of a community refers to the...Ch. 54 - You have a friend who is a strict vegan; that is,...Ch. 54 - Ecologists survey the tree species in two forest...Ch. 54 - When one species was removed from a tide pool, the...Ch. 54 - Invasive species often reach a large biomass...Ch. 54 - Why do most food chains consist of only three to...Ch. 54 - According to the top-down (trophic cascade) model...Ch. 54 - During succession, inhibition by early species a....Ch. 54 - According to the nonequilibrium model, a. chance...Ch. 54 - Which of the following shows a mismatch between...Ch. 54 - Prob. 18TYKCh. 54 - A major explanation for the decline in species...Ch. 54 - Prob. 20TYK
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- Now think about the diversity index you calculated in the diversity and succession labs: a value calculated of 10 in Habitat A and 5 in Habitat B would indicate: Habitat A likely has higher species richness and lower species evenness than Habitat B Habitat A likely has lower species richness and lower species evenness than Habitat B Habitat A likely has higher species richness and higher species evenness than Habitat B Habitat A likely has higher species richness and the same species evenness as Habitat Barrow_forwardThrough succession, a field becomes a forest as hardwood trees become the dominant species in the ecosystem. Grasses are no longer able to compete as well in the forested environment. grasses → shrubs → softwood trees → hardwood trees Which is most likely the limiting factor that inhibits the growth of the grasses in the forest? a slow rates of decomposition on the forest floor b low levels of sunlight reaching the forest floor c thin layers of topsoil on the forest floor d low levels of humidity near the forest floorarrow_forwardThere may be similarities between different species due to a common ancestor. Davao is known for its wide variety of fruits and other plant species that makes it more attractive to tourists, which of the following classification of the value of biodiversity is described? * A. Direct economic value B. Indirect economic value C. Aesthetic value D. both A and Carrow_forward
- Communities are defined by? A). Species whose ranges overlap B). Species that have the same ranges C). physical features of a defined geographic region D). The area occupied by the species with the largest rangearrow_forwardThe model of metapopulations also postulates that many species occupy their patches only temporarily, that sooner or later they will be eliminated by competition or some other factor. If this is true, would such a patch make a suitable wildlife preserve for that species? Discuss what wildlife managers might have to do with such a preserve.arrow_forwardOrganisms that we consider weeds are most likely to be found...? Group of answer choices a. in early stages of ecological succession b. are equally likely in all stages c. in climax communities d. in middle stages of ecological successionarrow_forward
- Which of the following locations would NOT represent a site for primary succession? A. A forest that was recently destroyed by a fire. B. A volcanic island. C. A retreating glacier. D. All of the above represent sites of primary succession.arrow_forwardIn a tropical rainforest, an open gap lacking vegetation has been created by the fall of a large tree. Which of the following statements describes the characteristics of the plant species that are last to colonize this disturbed habitat? a. they have low reproductive rates and are good competitors b. they are good colonizers c. they have high reproductive rates and are poor competitors d. they are dominated by r-selected species e. they have high species diversityarrow_forwardA mountainous volcano has erupted and destroyed all evidence of the previous ecosystem. The lava has cooled, leaving no trace of previous inhabitants. Years go by with no apparent change in the affected region. What evidence would first signal the succession of the community? A. Appearance of pioneer species B. Appearance of flowering plants in springtime C. Splitting of lava from regrowth of trees D. Saturation of lava with moisture for plant growtharrow_forward
- Why are species that live at the tops of mountains at increased risk of extinction due to climate change? a. The colder temperatures at the tops of mountains gradually increase, and the species at the tops of the mountains are displaced by species at lower elevations moving up. b. The species at the tops of the mountains are adapted to moving up and down the mountains and species at lower elevations are displacing them as they move down the mountains. c. The species at the tops of the mountains are adapted to lower oxygen and climate change increases oxygen content in the air. d. Species at the tops of mountains do not have the genetic diversity for adaptation that lower-elevational species do. Therefore species at the tops of the mountains are more likely to go extinct.arrow_forwardIn your region, what species are threatened with extinction? Why are they vulnerable? Suggest steps that could be taken to increase their populations.arrow_forwardWhich of these hypotheses does not explain why increased CO2 levels in the atmosphere could cause a decrease in the productivity of some crops because of changes in climate? A) There could be increases in average winter temperatures that reduce the growth of crops. B) There could be decreases in precipitation in some regions that reduce growth in some crops. C) There could be shifts in the ranges of some important species in the community, such as pollinators, that cause reduction of growth in some crops.arrow_forward
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