Download Gen Biology Exam 5 CH 30

Gen Biology Exam 5 CH 30-32
1.
Carnivore species typically arrive before herbivore species in primary succession.
True
2.
Biodiversity is important is that some organisms and ecosystems naturally break down pollutants.
True
3.
False
False
Which of the following has the greatest influence on primary productivity in a terrestrial ecosystem?
A.soil
B.moisture
C.sunlight
D.minerals
4.
Most of the world's fresh water supply is used for ________.
A.drinking water by humans
B.bathing by humans
C.irrigating crops
D.drinking water for livestock
5.
Hydropower and wind power are similar in that both are ________.
A.nonrenewable energy sources
B.renewable energy sources
C.commonly used worldwide as power sources
D.dependent in part on fossil fuels
6.
Predation is a density-dependent factor on population growth ________.
A.of the prey if their population becomes more dense, making it easier to be captured
B.of the predator if their population grows making competition for food necessary
C.of the predator if their prey population drops due to predation
D.All of the choices are correct.
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7.
A large percentage of resources in MDCs goes to ________.
A.growing crops
B.providing water
C.growing livestock
D.cleaning sewage
8.
Growth rate is dependent of birth rate alone.
True
9.
False
Food webs, food chains and ecological pyramids all represent ________.
A.mutualistic relationships
B.energy flow
C.interactions between communities
D.nitrogen cycling
10. Rapid change in the environment may result in extinction because organisms may not have time to
adapt.
True
False
11. Pesticides reduce soil fertility by ________.
A.combining with soil nutrients, making them unavailable
B.adding substances which are toxic to humans
C.destroying beneficial soil organisms
D.preventing plant roots from absorbing water
12. Environmental impact on a population includes ________.
A.per capita consumption of resources
B.geographical area of earth they inhabit
C.population size
D.both per capita consumption of resources and population size
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13. In Fig. 31.1, population Z represents ________.
A.producers
B.decomposers
C.consumers
D.autotrophs
14. A species ecological niche includes ________.
A.resources used
B.abundance of individuals
C.habitat
D.both resources used and habitat
15. An ecologist specializing in the study of how populations of different species within an area interact is
working at the ________.
A.biosphere level
B.community level
C.population level
D.ecosystem level
16. Beach erosion is often caused by structures built to prevent erosion.
True
False
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17. Ecologists often compare two communities and the number and type of species each have when studying
________.
A.species composition
B.species richness
C.species evenness
D.species abundance
18. Many MDCs experienced a decreased death rate followed by a decreased birth rate which resulted in
modest growth. This is called ________.
A.demographic transition
B.carrying capacity
C.more-developed growth rate
D.lag phase
19. What contributes to a lower death rate in both MDCs and LDCs?
A.improved socioeconomic conditions
B.improved food supply
C.modern medicine
D.improved water supply
20. Increasing sea levels ________.
A.lead to loss of habitat for aquatic organisms
B.cause beach erosion
C.are the result of global warming
D.both cause beach erosion and are the result of global warming
21. Age structure diagrams ________.
A.are divided into dependency, reproductive and post reproductive groups
B.show lag, exponential growth and logistic growth phases
C.reveal clumped, random and uniform population distributions
D.None of the choices are correct.
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22. During the lag phase of population growth, growth is slow because the ________.
A.biotic potential is low
B.range is limited
C.population is small
D.resources are limited
23. The part of the earth where a species can be found is called the species' ________.
A.resource
B.range
C.ecosystem
D.biotic potential
24. An accumulation of salts due to evaporation of irrigation water is called ________.
A.salinization
B.desalinization
C.desertification
D.forestation
25. The "sponge effect" in provision of fresh water is performed by ________.
A.wetlands
B.deserts
C.forests
D.both wetlands and forests
26. What percentage of the world's energy supply comes from renewable resources?
A.1%
B.19%
C.52%
D.85%
27. The use of industrial fertilizers to provide nitrogen for plants can lead to ________.
A.eutrophication as nitrates leach out of soil into surface water
B.air pollution by burning fossil fuels to produce these fertilizers
C.contamination of underground water supplies
D.All of the choices are correct.
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28. One important aspect of biodiversity is providing a source of ________.
A.new genetic material from wild plants for crop plants
B.drugs, especially from organisms in the rainforest
C.food for humans
D.All of the choices are correct.
29. Communities may overlap so that one population may actually be part of two communities.
True
False
30. Primary succession ________.
A.occurs in an area with no soil
B.when animals arrive before mosses or lichens
C.involves fungi which are critical in forming soil
D.occurs in an area with no soil and involves fungi which are critical in forming soil
31. Forests help regulate the global climate by ________.
A.releasing oxygen
B.absorbing carbon dioxide
C.preventing soil erosion
D.absorbing pollutants
32. Mutualism ________.
A.typically isolates two species within a community
B.is a rare interaction in most communities
C.creates interconnected populations within communities with many species having more than one
mutualistic relationship
D.None of the choices are correct.
33. A critical factor in the logistic growth pattern of a population is that ________.
A.carrying capacity has been reached in the final phase
B.exponential growth does not occur
C.resources are unlimited
D.stable equilibrium occurs before the lag phase
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34. What is the consequence of removing water from aquifers?
A.land subsidence including sinkhole formation
B.loss of habitat for aquatic organisms
C.saltwater intrusion
D.both land subsidence including sinkhole formation and saltwater intrusion
35. Which of the following has biomes listed from those with the least amount of water available to the most
amount of water available?
A.tundra – tropical rainforest – deciduous forest
B.tropical rainforest – deciduous forest - tundra
C.tropical rainforest – tundra – deciduous forest
D.tundra - deciduous forest – tropical rainforest
36. Which of the following is not part of biotic potential?
A.number of individuals in the post reproductive stage
B.number of times each female reproduces
C.typical number of offspring per reproduction
D.chances of survival until age of reproduction
37. Which of the following is a nonrenewable mineral resource?
A.synthetic organic compounds
B.metals such as aluminum and copper
C.fossil fuels
D.both fossil fuels and metals such as aluminum and copper
38. The squirrels, woodpeckers, wood-boring beetles, maple trees, earthworms and mosses among many
other organisms which interact and are found in a certain woodlot in the northeastern part of North
American can be defined as a/an ________.
A.ecosystem
B.biome
C.community
D.population
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39. Which of the following does not describe an MDC?
A.immigration often affects growth rate
B.the dependency group is usually the largest
C.high standard of living
D.population growth is modest
40. Since water is a renewable resource, fresh water is readily available globally.
True
False
41. The total disappearance of a species from the earth is called extinction.
True
False
42. Which of the following is not a characteristic of equilibrium populations?
A.exhibit only exponential growth
B.resources relatively scarce
C.have few offspring
D.fairly long lifespan
43. Communities change over time, often in a known progression ending in a stable climax community. This
is called ________.
A.climax succession
B.ecological progress
C.ecological succession
D.evolutionary progress
44. Human activity rarely affects the transfer rate of nutrients within a community.
True
False
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45. Which of the following is a renewable resource?
A.fossil fuels
B.minerals
C.water
D.sand and gravel
46. Phosphorus is typically released from ________.
A.decay of dead plants and animals
B.bacteria after absorbing it from the atmosphere
C.weathering of sedimentary rocks
D.both decay of dead plants and animals and weathering of sedimentary rocks
47. Competition for mates will increase in intensity within a population as the density of the population
increases.
True
False
48. What is occurring in a population which is experiencing replacement reproduction and population
growth?
A.men are having children with more than one woman
B.fewer women are entering the reproductive stage than the number of women who are leaving the
reproductive stage
C.women are having multiple offspring per pregnancy
D.more women are entering the reproductive stage than the number of women who are leaving the
reproductive stage
49. Which of the following is the greatest cause of biodiversity loss?
A.disease
B.pollution
C.habitat loss
D.overexploitation
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50. Which of the following is a reservoir of carbon?
A.fossil fuels
B.living organisms
C.atmospheric carbon dioxide
D.All of the choices are correct.
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Gen Biology Exam 5 CH 30-32 Key
1. FALSE
2. TRUE
3. B
4. C
5. B
6. D
7. C
8. FALSE
9. B
10. TRUE
11. C
12. D
13. B
14. D
15. B
16. TRUE
17. A
18. A
19. C
20. D
21. A
22. C
23. B
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24. A
25. D
26. B
27. D
28. D
29. TRUE
30. D
31. B
32. C
33. A
34. D
35. D
36. A
37. D
38. C
39. B
40. FALSE
41. TRUE
42. A
43. C
44. FALSE
45. C
46. D
47. TRUE
48. D
49. C
50. D
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Gen Biology Exam 5 CH 30-32 Summary
Category
Difficulty: 1
# of
Questions
19
Difficulty: 2
31
Mader - 030 Chapter...
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Mader - 032 Chapter...
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