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Ch. 5 Evolution of Biodiversity ABCD 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 300 400 500 200
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What is a reasonable estimate for the number of species currently alive on the planet Answer: 10 million 100 pts Return to Review
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The physical expression of an organism’s genes is called its … Answer: Phenotype 200 pts Return to Review
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Which measure of biodiversity takes into account the number of species present and the relative abundance of the species present? Answer: Shannon-Weiner index 300 pts Return to Review
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Answer: 1.True 2.True 3.False 400 pts Return to Review T or F genetic variation decreases in the following 1. Bottleneck effect 2. Genetic drift 3. Mutation
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Answer: 1.Species richness and species evenness. 2.polyploidy 500 pts Return to Review 1.What measurements are used to measure diversity within an ecosystem? 2.When does sympatric speciation occur?
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An _______ is a trait that improves that individual’s fitness for an environment. Answer: Adaptation 100 pts Return to Review
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What occurs when a small group from a population colonizes a new area? Answer: Founder effect 200 pts Return to Review
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A flower with red petals produces purple petals, this is most likely the result of… Answer: A genetic mutation 300 pts Return to Review
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Answer: Bottleneck effect 400 pts Return to Review When a population suddenly reduces in size either from habitat loss, natural disaster or other changes in the environment, its genetic variation is affected. This is known as…
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Answer: 1.False 2.False 3.True 500 pts Return to Review T or F is NOT an example of geographic isolation 1. Founder effect 2. Allopatric speciation 3. Sympatric speciation
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Approximately what percentage of species that have lived on the planet is thought to be extinct? Answer: 99% 100 pts Return to Review
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In a small population, when genotypes are lost by chance it is called… Answer: Genetic Drift 200 pts Return to Review
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Give an example of artificial selection. Return to Review Answer: Dog breeding, horse breeding 300
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Answer: 1.True 2.True 3.True 400 pts Return to Review T or F Evolution occurs in the following 1. Natural selection 2. Genetic drift 3. Artificial selection
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Answer: 1.Phylogenetic tree 2.notochord 500 pts Return to Review 1. this diagram is known as… 2. which structure is the most primitive?
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A variety of genes within a species is called its … Answer: Genetic diversity 100 pts Return to Review
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What is most significant when determining the diversity of an ecosystem Answer: Number of species present 200 pts Return to Review
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Which two scientist are credited with developing the theory of evolution by natural selection? Answer: Darwin and Wallace 300 pts Return to Review
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A population of rabbits with typical variations of traits lives in a meadow with a depression running through the middle. Over time, the depression fills in with water and becomes a river, separating the one population into two. This is an example of…. Answer: Allopatric speciation (geographic isolation) 400 pts Return to Review
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Answer: 1. False 2. True 3. True 500 pts Return to Review 1.T or F All mutations are harmful. 2.T or F Phenotype can be affected by the environment 3.T or F Niche specialist are most vulnerable to environmental change
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… Answer: … Return to Review
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Answer: … Return to Review Define limnetic, littoral, benthic and profundal zones.
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Answers: … Return to Review ….
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