Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 31, Problem 2MC
Summary Introduction
Introduction: Species play an important role in the ecosystem. They help in maintaining species diversity, food chain or food balance, structuring community, and the health of an ecosystem by maintaining the ecological balance.
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The relative abundance of any one species within a community of many species is known as
a.
species evenness.
b.
species richness.
c.
specialization.
d.
population.
According to the competitive exclusion principle,a. one species is always more competitive than another for a particular food source.b. competition excludes multiple species from using the same food source.c. no two species can occupy the same niche at the same time.d. competition limits the reproductive capacity of species.
The total number of species present in a community is called the
a.
species evenness.
b.
species richness.
c.
species-area relationship.
d.
population.
Chapter 31 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 31.1 - describe the goals of conversation biology?Ch. 31.1 - Prob. 2CYLCh. 31.2 - Prob. 1HYEWCh. 31.2 - Prob. 1CSCCh. 31.2 - Prob. 1CYLCh. 31.2 - Prob. 2CYLCh. 31.3 - Prob. 1TCCh. 31.3 - Prob. 2TCCh. 31.3 - Prob. 1CSCCh. 31.3 - Prob. 3TC
Ch. 31.3 - Prob. 4TCCh. 31.3 - define mass extinction?Ch. 31.3 - explain why biologists fear that a mass extinction...Ch. 31.3 - Prob. 3CYLCh. 31.4 - Prob. 1TCCh. 31.4 - Prob. 1CSCCh. 31.4 - Prob. 1CYLCh. 31.4 - Prob. 2CYLCh. 31.4 - Prob. 3CYLCh. 31.5 - Prob. 1TCCh. 31.5 - describe the principles of sustainable...Ch. 31.5 - Prob. 2CYLCh. 31.5 - Prob. 3CYLCh. 31 - Which of the following is not a major threat to...Ch. 31 - Prob. 2MCCh. 31 - Prob. 3MCCh. 31 - Prob. 4MCCh. 31 - Prob. 5MCCh. 31 - Prob. 1FIBCh. 31 - Prob. 2FIBCh. 31 - Prob. 3FIBCh. 31 - The smallest population of a species that is...Ch. 31 - A popular saying tells us that We do not inherit...Ch. 31 - Prob. 1RQCh. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Why are efforts to protect monarch butterflies a...Ch. 31 - Prob. 1ACCh. 31 - Search for and describe some examples of habitat...
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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
- A species that has an immediate threat to extinction is said to be:a. threatened. c. alien.b. endangered. d. extinct.arrow_forwardWhich of the following defines the role of a species in a community,including its habitat and interaction with other species?a. ecological niche d. mimicryb. competitive exclusion e. None of these are correct.c. competition levelarrow_forwardWhich of the following best describes a keystone species? a. An organism, whose introduction causes or is likely to cause environmental harm b. An organism, who if removed, the entire ecosystem changes. c. Can signal a change in the biological condition of a particular ecosystem and diagnose the health of that ecosystem d. Can indirectly protect several other species in the same habitatarrow_forward
- A group of individuals of the same species within the same ecosystem is known as a community. b. population. c. colony. d. cohort.arrow_forwardWhy does the aquarium trade contribute to the introduction of nonnative species? a. Exotic species can escape or be released into local ecosystems. b. Aquarium owners do not always understand how ecosystems interact. c. Nonnative fish are shipped worldwide for aquariums. d. All of the above Please select the best answer from the choices provided A B C Darrow_forwardWhich of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.arrow_forward
- Sunlight drives the production of terrestrial grasses along the bank of a tropical river. Hippo consume the grass and then defecate in the river which fertilizes aquatic plants. This assemblage is best referred to as a… a. population b. trophic cascade c. commensalism d. ecosystem e. communityarrow_forwardConservation hotspots are best described as a. areas with large numbers of endemic species, in many of which species are disappearing rapidly. b. areas where people are particularly active supporters of biological diversity. c. islands that are experiencing high rates of extinction. d. areas where native species are being replaced with introduced species.arrow_forwardIf you are studying the changes in the panda population in Asia you are most likely considered a…. a. Population ecologist b. Ecosystem ecologist c. Global Ecologist d. Community ecologistarrow_forward
- Which of the following is the definition for species richness? A. The number of species in a community. B. The relative abundance and species richness in a community. C. The number of dominant species in a community. D. The proportion of a given species in the community.arrow_forwardWhich of the following statements is correct regarding the competitive exclusion concept? a. multiple species can’t share the exact same niche within a community b. the realized niche of a species is different from its fundamental niche. c. competition within a population results in the success of the best-adapted individuals. d. two species cannot coexist within the same habitat.arrow_forwardA conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one? A. Humans are dependent on many species for food, medicines, fiber, and other necessities. B. Biodiversity can be exploited indefinitely for the profit of humans. C. Other species have inherent value and humans have a moral obligation to protect them. D. Biodiverse ecosystems provide ecosystem services that sustain all life on Earth. E. Biodiversity provides emotional and physical health benefits by providing places for humans to visit for wonder, insight, and exercise.arrow_forward
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