Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 56, Problem 9TY
Summary Introduction
Introduction: Populations are groups of organisms that can interbreed and are dynamic in nature as they have the ability to grow.
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Use 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?
Given that fertility rate is defined as each woman producing exactly enough offspring to replace herself and her offspring’s father, if the fertility rate is sustained for a generation, then which of the following is true?
Select one:
a. r > 1
b. 0 < r < 1
c. r = 0 and there is zero population growth
d. r = 1
How does the logistic growth model of population growth differ from the exponential growth model? A. The graph of the exponential model is S-shaped. B. The logistic growth model shows an unrestricted growth rate. C. The logistic growth model considers the environment's carrying capacity. D. The exponential growth model shows a restricted growth rate.
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- Nt= N0 t represents:a.geometric population growth.b.annual growth rate.c.exponential growth rate.d.logistic growth.e.none of the choices apply.arrow_forwardWhen an environment has reached its carying capacity for a certain population, which of the following is true? A. Growth and immigration rate is equal to death and emigration rate. B. Growth and immigration rate is greater than death and emigration rate. C. Growth and immigration rate is less than death and emigration rate. D. Growth rate is exponential. Answer Why do you believe this is the correct answer.arrow_forwardThe curve below shows the growth rate of a population that has a per capita growth rate of 0.4. Which of the following is true about this curve. More than one is possible. exponential growth 2500000 2000000 1500000 1000000 500000 0 5 10 15 20 25 Select one or more: Ua. r becomes greater as the population grows because there are more births per year. b. There are more births per generation as you move right on the graph c. exponential growth is most often observed in stable populations that have resided in an environment for a long time. Od. The slope of the curve changes continuously as you move to the right even though r remains the same.arrow_forward
- A population’s ecological footprint is measured in terms of: a how many resources the population uses. b how much land area is needed to support its lifestyle. c the amount of waste/pollution it produces. d the number of people who live there.arrow_forwardPopulation growth that adds the same number each year A. Arithmetic Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponential Growtharrow_forwardAs 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 increasearrow_forward
- Growth rate of a population is determined by: A. The increase in the number of people per unit of time. B. The number of people being born minus the number of people dying. C. The number of children living per each two adults. D. The number of people times the number of children each one has per year.arrow_forwardThe 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.arrow_forwardA 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_forward
- Which of the following is a factor that would decrease the size of a population? A. Death rate is higher than the birth rate B. Abundant food supply C. Immigration D. Birth rate is higher than the death ratearrow_forwardPopulation growth that is dependent on the number of individuals A. Arithmetic Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponential Growtharrow_forwardChoose the following term that corresponds with the definitions listed below. a. Biotic potential b. Exponential growth c. Logistic Growth d. Carrying capacity 1. A growth pattern that forms a S-shaped curve ________ 2. Theoretical highest possible reproductive capacity of a population given little to no environmental resistance ________ 3. A growth pattern that forms a J-shaped curve __________ 4. The theoretical population size that a fiven region can sustain over a prolonged time period ____________arrow_forward
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