Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305544703
Author: STARR
Publisher: Cengage
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Chapter 45, Problem 7SQ
Summary Introduction
Introduction: The branch of science that deals with the study of the geographic distribution of species is called biogeography. The total number of species present in a given area is called as species richness. The species present in a community can change over many generations. Some of these species alter the habitat, allowing other species to come and substitute them. These changes that take place in a community are collectively called as ecological succession. They are of two types, namely primary succession and secondary succession.
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By a currently favored hypothesis, species richness of a community is greatest when physical disturbances are of_____ intensity and frequency. a. low c. high b. intermediate d. variable
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.
Why do moderate levels of disturbance result in an increase in community diversity?a) The resulting uniform habitat supports stability, which in turn supports diversity.b) Less-competitive species evolve strategies to compete with dominant species.c) Habitats are opened up for less competitive speciesd) Competively dominant species infrequently exclude less competitive species after a moderate disturbance.
Chapter 45 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 45 - The type of physical environment in which a...Ch. 45 - Which cannot be a symbiosis? a. mutualism b....Ch. 45 - Prob. 3SQCh. 45 - ______ can lead to resource partitioning. a....Ch. 45 - Prob. 5SQCh. 45 - Prob. 1DAACh. 45 - Prob. 2DAACh. 45 - Testing Biological Control Ant-decapitating phorid...Ch. 45 - Prob. 4DAACh. 45 - Lizards that eat flies they catch on the ground...
Ch. 45 - Prob. 7SQCh. 45 - With ______, one species evolves to look like...Ch. 45 - Growth of a forest in an abandoned corn field is...Ch. 45 - Prob. 10SQCh. 45 - If you remove a species from a community, the...Ch. 45 - Prob. 12SQCh. 45 - Prob. 13SQCh. 45 - Prob. 14SQCh. 45 - Prob. 15SQCh. 45 - With antibiotic resistance rising, researchers are...Ch. 45 - Flightless birds on islands often have relatives...
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- Which 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_forwardThe total number of species present in a community is called the a. species evenness. b. species richness. c. species-area relationship. d. population.arrow_forwardThe presence of one species (A) in a community may benefit another species (B) if a. a commensalistic relationship exists between the two. b. The first species (A) preys on a predator of the second species (B). c. The first species (A) preys on a species that competes with a species that is eaten by the second species (B). d. All of the choices are correct.arrow_forward
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- K-selected species typically a) have short life spans b) display a logistic graph c) are more competitive than r-selected species d) live close to the biotic potential, taking advantage of the environmental conditionsarrow_forwardIf you were to experimentally remove the snake from the community in the diagram below, and you found that frogs dramatically increased in number while most of the other species declined in number then you could conclude that the snake is..? PICTURE ATTACHED A. an introduced species B. a parasite C. keystone species D. co-evolved with the raccoon E. an example of bottom up controlarrow_forwardCommunities 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_forward
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