Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 43, Problem 7TY
Summary Introduction
Introduction:
The mean number of progenies that a woman produces during her life span is called thenet reproductive rate
. The reproductive rate is calculated by the given formula:
Where,
S = sum of all age class,
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If population growth is assumed to be density dependent in all four populations, what will happen to these populations sometime after generation 10?
1. Population size will grow monotonically.
2. Rate of population growth will decrease.
3. Rate of population growth will remain the same.
4. All populations will follow the curve of population
The discrete logistic function (the one you can solve with your calculator) has a time lag built in = one
generation. What would a greater time lag do to the outcome?
increase the chances of population exceeding K
decrease the chances of population exceeding K
slow down population growth by decreasing r
increase population growth by increasing r
it would have little/no effect under all circumstances
By now, you must have already learned a lot about POPULATION DYNAMICS.
How will you know that the population size increased/decreased? What are the indicators for the increase/decrease?
What factors are known to be responsible for the increase/decrease? Give as many as you can think of.
Chapter 43 Solutions
Principles of Biology
Ch. 43.1 - If we mark 110 Rocky Mountain goats andrecapture...Ch. 43.1 - Prob. 1TYKCh. 43.2 - Prob. 1BCCh. 43.2 - Prob. 1TYKCh. 43.2 - Prob. 2TYKCh. 43.2 - Prob. 3TYKCh. 43.3 - What is the population growth per unit of time...Ch. 43.3 - Prob. 1TYKCh. 43.3 - Prob. 2TYKCh. 43.4 - Prob. 1CC
Ch. 43.4 - Prob. 1BCCh. 43.4 - Prob. 2CCCh. 43.4 - Prob. 3CCCh. 43.4 - Which types of factors tend to stabilize...Ch. 43.4 - A species interaction in which one species...Ch. 43.4 - According to the competitive exclusion hypothesis....Ch. 43.4 - Prob. 3TYKCh. 43 - A student decides to conduct a mark-recapture...Ch. 43 - Prob. 2TYCh. 43 - Prob. 3TYCh. 43 - Prob. 4TYCh. 43 - Prob. 5TYCh. 43 - Prob. 6TYCh. 43 - Prob. 7TYCh. 43 - Prob. 8TYCh. 43 - Prob. 9TYCh. 43 - Prob. 10TYCh. 43 - Prob. 1CCQCh. 43 - Prob. 2CCQCh. 43 - A principle of biology is that biology affects our...Ch. 43 - Prob. 1CBQCh. 43 - Prob. 2CBQ
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- Which of the following is best at showing the life expectancy of an individual within a population? a. quadrat b. mark and recapture c. survivorship curve d. life tablearrow_forwardFigure 45.16 Age structure diagrams for rapidly growing, slow growing, and stable populations are shown in stages 1 through 3. What type of population change do you think stage 4 represents?arrow_forwardIf a population has a constant r = 0.3 Group of answer choices the per capita rate of population increase continues to accelerate as the population grows the time necessary for population size to double gets shorter as time goes by since population size is increasing exponentially the absolute increase (change in population size per unit time) is also constant the time necessary for population size to double is also constantarrow_forward
- several years ago wolves were reintroduced in to a national park in North Carolina. Researchers have monitored the populations over the last several years and the per capita growth rate of the population is.5. If the current population size is 100, what equation would you use to determine how large he population will be in ten yearS? N/t *r N(1+r)^t (N*r)/t please highlight the answerarrow_forwardWhich of the following populations would be growing? a) Geometric rate (1) = 0.63 b) Exponential growth rate (r) = 0.63 c) Net reproductive rate (R0) = 0.63 d) All of the above populations are growingarrow_forwardWhat is the relationship between population density and available resources? exponentially proportional There is no relationship. directly proportional inversely proportionalarrow_forward
- The per-capita birth rate of individuals in a population is 0.8, and the per-capita death rate of individuals in the same population is 0.6. Given these rates, what is happening to the size of the population? constant decreasing increasing nearing half of K randomarrow_forwardWhen there are no limits to population growth, rmax represents which of the following? maximum reproductive rate maximum per capita reproduction rate maximum per capita growth rate none of the options are correct maximum life history rate Which of the following traits would not be considered a life history trait? age at maturity how often they reproduce size of their horns size of offspring none of the options are correctarrow_forwardWhat can you say about population dynamics that have fast population growth rate (i.e., a high value for r) AND also have density dependence?arrow_forward
- Which of the following forces can de-stabilize a population, resulting in a unstable equilibrium? a. short time lags in birth rates or death rates b. inverse density dependence c. density-dependent natality d. moderate competition e. density-dependent mortalityarrow_forwardIf a population eventually reached the point where it no longer changed in size, which of the below must be true? Group of answer choices K > R0 N = K R0 = K/N r = K N > Karrow_forwardWhat is the name of the model that exhibits the maximum rate of population growth? Select one: Logistic Factorial Exponential Speculativearrow_forward
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