CAMPBELL BIOLOGY (18W)
12th Edition
ISBN: 9780136858256
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 53, Problem 7TYU
According to the
- (A) the number of individuals added per unit time is greatest when N is close to zero.
- (B) the per capita
population growth rate Increases as N approaches K. - (C) population growth is zero when N equals K.
- (D) the population grows exponentially when K is small.
Expert Solution & Answer
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Students have asked these similar questions
During what phase of the growth curves in each diagram is the population just beginning
to colonize an area? (C)
a) Which type of population growth appears to continue unchecked?
b) The growth curves in the Model are often referred to using the letters of the alphabet
they resemble. The logistic growth curve is sometimes referred to as an S-curve.
What letter would you use to describe the exponential growth curve?
c) What causes the population to slow down during logistic growth?
d) The maximum population an environment can sustain is affected by environmental
factors that cause the population to level out or become stable. What term is used to
describe this level of logistic growth?
Diagram A-Exponential Growth Curve
Population Numbers
Exponential
growth
Lag phase
Time
Population Numbers
Diagram B-Logistic Growth Curve
Lag phase
Time
Carrying
capacity (K)
Pressure begins due to
environmental resistance
In the logistic model of population growth, per capita growth rates are highest at __ densities and population growth rates are highest at ___ density (NOTE: assume ‘high’ refers to at or near K).
A) low, intermediate
B) low, low
C) low, high
D) None of the above are true
Which of the following growth models has a constant instantaneous population growth rate (dN/dt)
regardless of population size? Select "yes" or "no" for each.
logistic
[ Choose ]
exponential
[ Choose ]
cycling
[ Choose ]
Chapter 53 Solutions
CAMPBELL BIOLOGY (18W)
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Identify three key life history traits, and give...
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - Prob. 2CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 4CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - How have the rate and number of people added to...Ch. 53.6 - WHAT IF? Type "personal ecological footprint...Ch. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Based on current growth rates, Earth's human...Ch. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - During exponential growth, a population always (A)...Ch. 53 - Prob. 9TYUCh. 53 - Prob. 10TYUCh. 53 - EVOLUTION CONNECTION Contrast the selective...Ch. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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- A population that did not grow in close relation to the amount of resources available in the environment, and dramatically overshot the carrying capacity, would experience: A. logistic growth, such as shown on the S-shaped curve B. exponential growth, such as shown on the J-shaped curve C. unpredictable growth, such as shown on the ?-shaped curve D. exponential growth, such as shown on the S-shaped curve E.logistic growth, such as shown on the J-shaped curvearrow_forwardA population of Giant armadillo, an endangered species found in South America, increased in numbers from 152 to 174 from 2001 to 2006. The per capita growth rate for the armadillo population is ? (three decimal places)arrow_forwardThe growth rate of a population per unit of time is calculated by using this formula: G = r x N. What is the quantity r and how is it calculated?arrow_forward
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