Chapter 4 & 5 Test Review

Match the definition with the correct term.
population density immigration dispersion emigration carrying capacity
 maximum number of individuals in a species that an environment can support

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population density immigration dispersion emigration carrying capacity
 number of organisms per unit area of a population

Match the definition with the correct term.
population density dispersion immigration carrying capacity emigration
 individuals moving into a population

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population density dispersion immigration carrying capacity emigration
 the pattern of spacing of a population within an area

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population density dispersion immigration carrying capacity emigration
 individuals moving away from a population

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demography extinction biodiversity edge effect endemic species
 disappearance of a species from the biosphere

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demography extinction biodiversity edge effect endemic species
 species that are only found in a specific geographic area

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demography extinction biodiversity edge effect endemic species
 variety of life in an area, determined by the number of different species in that area

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demography extinction biodiversity edge effect endemic species
 different environmental conditions that occur along the boundaries of an ecosystem

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demography extinction biodiversity edge effect endemic species
 study of the characteristics of the human population

Many different factors can have an impact on the population of a species within an environment. Some of these factors have different effects when the population is small compared to when the population is large. What is the term used to describe these types of factors that work to limit a populations size?
 a. density-dependent factors
 b. density-independent factors
 c. extinction factors
 d. coincidental factors

 A. competition for food
 B. presence of parasites
 C. spread of disease
 D. fire destroys a forest

What type of diversity is referred to when you look at the number of different species in a community.
 A. genetic diversity
 B. ecosystem diversity
 C. species diversity
 D. Mendelian diversity

 A. exponential population growth
 B. zero population growth
 C. logistic population growth
 D. none of the above

The human population is divided into three categories known as pre-reproductive (before age 20) , reproductive (age 20-44), and post-reproductive (age 45+). This is known as the
_________ of the population.
 A. age structure
 B. age classification
 C. reproductive structure
 D. all of the above

 A. the iron age saw more growth than the modern age
 B. exponential growth began around 4000 B.C.
 C. farming caused a sharp population increase
 D. exponential growth began around the time of the industrial revolution

 A. adding natural predators to a degraded ecosystem to control prey populations
 B. using living organisms such as plants and fungi to detoxify a polluted area
 C. nonnative species that are transported to a new habitat
 D. the excessive use of a species that has economic value

Look at the chart. Which of the following statements is true?
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A. more bird species have been lost than mammal species
B. more mammal species have been lost than invertebrate species
C. birds have lost a higher percentage of species than mammals
D. fish have lost a higher percentage of species than reptiles

There are many different threats to biodiversity. One of them is introduced or invasive species. What are introduced species?
 A. the excessive use of a species that has economic value
 B. extensive algae growth caused by fertilizers and waste getting into waterways
 C. nonnative species that are transported into a new habitat
 D. the separation of an ecosystem into small pieces of land

Short answer
 Define overexploitation and explain how it is a threat to biodiversity.

Short answer
 Define habitat fragmentation and explain how it is a threat to biodiversity.

Animals that are _________ have short life spans and produce many offspring at one time.
 A. k-strategists
 B. reproducers
 C. r-strategists
 D. none of the above