IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 53.5, Problem 3CC
WHAT IF? → Suppose you were studying a species that has a population cycle of about ten years. How long would you need to study the species to determine if its
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Exponential vs Logistic Growth
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1-Which of the two curves exhibits exponential growth?
2-Which of the two curves exhibits logistic growth?
3-Which of the two curves is most likely to occur under natural conditions?
4-What is the carrying capacity of this graph?
5-In what generation does the green population reach its carrying capacity? _
6-Which population curve would only occur under ideal (perfect) conditions?
7-What do we call factors that stop a population from growing out of control?
8-During which years did graph B show exponential growth?
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explain properly. How is a species’ population dynamics affected by the presence of another species with the same niche?
Q6.8. Imagine that after the birds have been living in the city for many years a second big flock of birds arrives.
How will the bird population size change in the 10 to 20 years after the extra birds arrive? Choose the graph that
best represents how the city's bird population should change over time. (Note: there are still no predators of these
birds in the city.)
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Chapter 53 Solutions
IA MODIFIED MASTERING BIOLOGY WITH E TEX
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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- WHAT IF? Suppose you were studying a species thathas a population cycle of about ten years. How longwould you need to study the species to determine if itspopulation size were declining? Explain.arrow_forwardWrite the BIDE dynamics equation, where the left side of the equation is Nt+1. Realizing you are working with a closed population, put an “X” through the terms you will not need to consider to understand population growth of a species.arrow_forwardSUBJECT : Biology - Ecology How would you describe the slope of a rank-abundance curve that vary with increasing species evenness?arrow_forward
- Plot survivorship curves for all three species illustrated in Table 1 on a single graph. Label the axes and provide a clear legend convert it and make use of legend, so for the first species it would be 6months=1unit, then for the second species 1yr=1unit, and the third species would be 50yrs=1unitarrow_forwardShow how you build the logistic model for population growth from the exponential model equation? What part of the logistic growth equation produces the sigmoidal growth curve?arrow_forwardPopulation ecology: Do environmental stochasticity and demographic stochasticity impact small populations or large populations more? Please explain why.arrow_forward
- a) Indicate the type of growth and the type of reproductive strategy that each population presents individually.b) Indicate the type of ecological interaction that exists between both populations. Support your answer mathematically.arrow_forwardBiology Question! Water wisteria is an aquatic plant that is easy to care for and reproduces very quickly. A small man-made pond of 350 L contains 78 water wisteria plants. 15 new plants are introduced daily to the pond, while 50 plants are taken out once a week to be sold at local pet shops. What is the overall population change in a two-week period? Express your answer rounded to the nearest whole number. What is the population density of water wisteria at the beginning? Express your answer as a value between 0 and 1 rounded to two decimal places.arrow_forwardPlz answer shortly. You are a conservation biologist working on a captive breeding program for black-footed ferrets. You have the budget to establish either two populations of 100 ferrets each, or 10 populations of 20 ferrets each. Which approach do you think is most likely to succeed, and why?arrow_forward
- INTERPRET DATA Examine the top and middle graphs in Figure 54-5. Are these examples of exponential or logistic population growth? Where is K in each graph? (You may need to refer to Chapter 53 to answer these questions.) RESULTS AND CONCLUSION: The top and middle graphs show how each species of Paramecium flourishes when grown alone. The bottom graph shows how they grow together, in competition with each other. In a mixed culture, P. aurelia outcompetes P. caudatum, resulting in competitive exclusion. SOURCE: Adapted from G.F. Gause, The Struggle for Existence (Williams and Wilkins, Baltimore, 1934). Figure 54-5 G.F. Gauses classic experiment on interspecific competitionarrow_forwardCalculate the rate of population change for a hypothetical population of wildebeest using the logistics equation and carrying capacity equation. How can you explain these results? N = 500, r = 0.1, K = 1000, calculate dN/dt.arrow_forwardCompare the advantages and disadvantages to a species that result from exponential or logistic growth. Why do you think hares have evolved to reproduce as rapidly as possible, while lynx appear to have intrinsic or social growth limits?arrow_forward
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