WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 16, Problem 1MC
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As a population size approaches (i.e. is almost equal to) carrying capacity for a certain population, which of the following outcomes is predicted by the logistic growth equation?
a.
The population growth rate will not change
b.
The population growth rate will approach zero
c.
The population size will increase exponentially
d.
The carrying capacity of the environment will increase
dN/dt= rmaxN represents:a.annual growth rate.b.geometric population growth.c.exponential population growth.d.logistic growth.e.none of the choices apply.
The logistic population growth model, dN/dt = rN[(K – N)/K], describes a population’s growth when an upper limit to growth is assumed. As N approaches (numerically) the value of K
a. dN/dt increases rapidly.
b. dN/dt approaches 0.
c. dN/dt increases slowly.
d. the population becomes threatened by extinction.
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WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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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_forwarddN/dt= rmaxN [(K – N)/K] represents:a.annual growth rate.b.geometric population growth.c.exponential growth rate.d.logistic growth.e.none of the choices apply.arrow_forwardA population that grew in close relation to the amount of resources available in the environment, would experience A. exponential growth, such as shown on the J-shaped curve B. logistic growth, such as shown on the S-shaped curve C. unpredictable growth, such as shown on the ?-shaped curve D.logistic growth, such as shown on the J-shaped curve E. exponential growth, such as shown on the S-shaped curvearrow_forward
- Based on the equation for logistic population growth, Logistic Growth O A. new Individuals are added most rapidly at low population sizes. This figure displays the equation for logistic population growth and visualizes population growth as a function of time (number of generations) as it approaches carrying capacity. N stands for population size, K stands for carying capacity, and r stands for intrinsic rate of increase. O B. population growth never exceeds K. C. growth rate decreases as N approaches K. D. the population keeps growing when N equals K. K= carrying capacity dN (K-N) dt Number of generations ered MacBook Air F10 F11 吕口 F3 888 F4 F5 F1 F2 $ % & * @ 7 9 2 4 Y P Q W E R F G H K A S D C V N M Z .. * CO B #3 Population size (M)arrow_forwardCompare exponential J-curve growth (line A) to logistic S-curve growth (line B). Explain the conditions under which each might occur in might. ✓ ✓ A Carrying Capacity (K) it Number of Individuals B Timearrow_forwardUnder logistic population growth what happens as N becomes similar in size to K? Group of answer choices a. population growth speeds up b. K shrinks c. K expands d. population growth approaches zero e. population growth becomes negativearrow_forward
- a) The region numbered 3 on the graph represents the __A__ brought on by the limiting factors called __B___. Select one: a. A B Carrying capacity Environmental resistance b. A B Environmental resistance Exponential growth c. A B Exponential growth Lag phase d. A B Lag phase Carrying capacity b) The region of the graph that illustrates the exponential growth of a population and the type of graph illustrated are, respectively: Select one: a. Exponential Growth Type of Graph 4 S-shaped b. Exponential Growth Type of Graph 2 Logistic c. Exponential Growth Type of Graph 3 J-Shaped d. Exponential Growth Type of Graph 1 Exponential c) What do the regions numbered 2 and 4 on the graph represent? Select one: a. Region #2 Region #4 Immigration and birth rate is less than emigration and death rate. Emigration and death rate is less than immigration and birth rate. b. Region #2…arrow_forwardWhich of the following is a plausible consequence of delayed density dependence in a population that would otherwise have logistic growth? A. Increased environmental stochasticity B. Dampened oscillations C. Population cycles D.Both B and C E. None of the above result from delayed density dependencearrow_forwardASAParrow_forward
- The carrying capacity (K) is the maximum population size that can be supported or sustained by a given environment. Which of the following statements about the carrying capacity is NOT true? Select one: a. We can think of K as some "average" value that a given environment can support. b. Environmental fluctuations cause the carrying capacity to fluctuate over time. c. Once a population reaches its carrying capacity, the size of the population remains constant. d. When a population overshoots K, individuals die due to lack of resources.arrow_forwardUse this graph of the idealized exponential and logistic growth curves to complete the following. a. Label the axes and curves on the graph.b. What does the dotted line represent? c. For each curve, indicate and explain where population growth is the most rapid. d. Which of these curves better represents global human population growth?arrow_forwardThe population of individuals is growing at a continuous rate. The maximum growth rate is 0.35 and the carrying capacity of the population is 800 individuals. a. If the population size is 20 individuals, find the population growth rate. Show your work. b. If the population was nearing the carrying capacity, how would this rate compare to the calculated rate in part a? A calculation is not required.arrow_forward
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