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Quantitative Review Slide 2 / 8 Questions #1-2 refer to the - - PowerPoint PPT Presentation
Quantitative Review Slide 2 / 8 Questions #1-2 refer to the - - PowerPoint PPT Presentation
Slide 1 / 8 Quantitative Review Slide 2 / 8 Questions #1-2 refer to the following graph of logistic population growth: Slide 3 / 8 1 At what value on the y-axis does the population reach its carrying capacity? Answer Slide 3 (Answer) / 8
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1 At what value on the y-axis does the population reach its carrying capacity?
Answer
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1 At what value on the y-axis does the population reach its carrying capacity?
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Answer
1
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2 At the carrying capacity, the growth rate of the population approaches what value?
Answer
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2 At the carrying capacity, the growth rate of the population approaches what value?
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Answer
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3 In a basic food chain for a meadow community, flowers are consumed by herbivorous insects. Herbivorous insects are consumed by rodents who are, in turn, consumed by a variety of
- predators. If the biomass of flowers is 10,000 kg,
what is the approximate biomass of the secondary consumers?
Answer
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3 In a basic food chain for a meadow community, flowers are consumed by herbivorous insects. Herbivorous insects are consumed by rodents who are, in turn, consumed by a variety of
- predators. If the biomass of flowers is 10,000 kg,
what is the approximate biomass of the secondary consumers?
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Answer
100 kg
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4 Each trophic level in a food chain is only able to assimilate a certain amount of the energy available to them into growth. If 1,000,000 J of sunlight in a valley results in 10,000 J of energy stored in primary producers, what is the production efficiency of the primary producers?
Answer
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4 Each trophic level in a food chain is only able to assimilate a certain amount of the energy available to them into growth. If 1,000,000 J of sunlight in a valley results in 10,000 J of energy stored in primary producers, what is the production efficiency of the primary producers?
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Answer
1%
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5 Production efficiency varies by organism. Birds have a production efficiency of about 1% while fish are more efficient at 10%. Insects have even higher production efficiencies at 40%. If 200 J of energy are available to a grasshopper, how much
- f that energy will the grasshopper not be able to
assimilate into new growth?
Answer
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5 Production efficiency varies by organism. Birds have a production efficiency of about 1% while fish are more efficient at 10%. Insects have even higher production efficiencies at 40%. If 200 J of energy are available to a grasshopper, how much
- f that energy will the grasshopper not be able to
assimilate into new growth?
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Answer
120 J
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6 The basic equation for exponential growth is N = N0 ert Where N0 is the starting population, r is the rate
- f growth, and t is time.
A population of buffalo in Kruger National Park numbered 29,359 in 1991. After this census was complete, a severe drought affected the region. By 1995, the population had dropped to 14,123. The following two years brought ample rainfall that allowed the buffalo population to begin
- recovery. If the growth rate of the population
between 1995 and 2006 was 0.078, what was the population in 2006? Write your answer with two significant digits.
Answer
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Slide 8 (Answer) / 8
6 The basic equation for exponential growth is N = N0 ert Where N0 is the starting population, r is the rate
- f growth, and t is time.
A population of buffalo in Kruger National Park numbered 29,359 in 1991. After this census was complete, a severe drought affected the region. By 1995, the population had dropped to 14,123. The following two years brought ample rainfall that allowed the buffalo population to begin
- recovery. If the growth rate of the population
between 1995 and 2006 was 0.078, what was the population in 2006? Write your answer with two significant digits.
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Answer
3.3 x 10
4 buffalo