BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 44, Problem 11SA
Summary Introduction
Introduction:
"Biodiversity" refers to the variety of species on Earth. Species richness is the common measure of a region's biodiversity.
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- 1. What will best describe ecosystem biodiversity? a. Measure of the variety of different versions of the same genes within individual species b. Describes the number of different kinds of organisms within individual ecosystem c. Defined by species richness and species evenness d. Includes the variation in both terrestrial and aquatic ecosystems 2. Which is NOT a reason to preserve biodiversity? a. To find unique genetic materials that may improve existing crops b. To increase the chances of discovering organisms with medicinal value c. To prevent adaptation and natural evolution of organisms d. To allow ecosystem services to continuearrow_forward90. Which of the following is true regarding the importance of biodiversity. A. diversity contributes to ecosystem function (e.g., productivity) B. diversity begets stability (e.g., more stable productivity) C. diversity begets diversity (e.g., plant diversity promotes higher trophic level diversity) D. only two of the above are true regarding the importance of biodiversity E. all of the above are true regarding the importance of biodiversityarrow_forwardThe fundamental unit of ecology is the A. Ecosystem B. Biosphere C. Population D.Speciesarrow_forward
- Identify the term that best matches the definition or description given. a. selective advantage b. variation f. selective pressure g. artificial selection h. extinct i. c. monoculture d. mimicry e. adaptation fitness j. mutation 71. human selection of particular traits to modify a population 72. structural differences between individuals 73. environmental conditions that select for certain characteristics and select against other characteristics 74. changes to the genetic material of an organism 75. planting of one species in a large area 76. disappear completely from Earth 77. one species looks like another species 78. a behaviour that helps an individual survive and reproduce in a particular environment 79. a genetic advantage that improves an organism's chance of survival 80. genetic contribution to the next generation by successful reproductionarrow_forwardA conservation biologist is studying a tropical rainforest and records the number of unique plant species in three separate patches within the rainforest. She finds that Patch A has 50 species, Patch B has 45 species, and Patch C has 55 species. She then determines that the total number of unique plant species across all three patches is 100. Which type of diversity does this last number illustrate? Group of answer choices: A. Beta B. Epsilon C. Delta D. Alpha E. Gammaarrow_forwardAll the organisms of various species living within a given area constitute a. Biosphere b. ecosystem c. population d. communitarrow_forward
- A 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_forwardThe number of different classes that are represented in a given community. The effective number of classes refers to the number of equally abundant classes needed to obtain the same mean proportional classes abundance as that observed in the dataset of interest. A Ecosystem Biodiversity B Species Diversity c) Genetic Diversity D Classes Diversityarrow_forwardThe study of how habitat-type distribution across a landscape is known as: A. Landscape Ecology B. Evolutionary Ethology C. Population Biology D. Conservation Biologyarrow_forward
- The physical surroundings in which a species is normally found is its A. Community B. Habitat C. Home range D. Nichearrow_forwardThe number of species on an island depends on the size of the island and its distance from a mainland. This statement would most likely be made by . a. an explorer c. a geologist b. a biogeographer d. a philosopherarrow_forwardThe study of biodiversity relies on a number of concepts from other fields of biology. Enumerate 3 biological fields and how are they related to the specific contribution to the study of biodiversity.arrow_forward
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